Got to Best Buy at 10am today and me and my friend were the 4/5th in line. Unfortunately our rep didn't let us record (though I did see someone recording way later). Our Best Buy let us do two 2 minute matches and I had the chance to try out a match on the 3DS version. So I had three different chances to choose different characters. I chose Pit for every one, lol. Here are my thoughts.
Note that I haven't played Brawl competitively since 2012, and have a hard time recalling exactly how Pit moved and felt in that game because I'm so used to Project M Pit now. So I can't really make good comparisons with Brawl.
Also, forgive me if I give any incorrect info. I'm doing this all from memory of a very hectic day.
First off Pit looks REALLY good. Of course that's because the game itself looks fantastic. His colors are White, Red, Green, and Gold. His alternate colors are really enjoyable and I'll definitely be sticking to red like I do in PM (Green for Brawl). The red looks a lot better, and the gold is really nice too! Like other people pointed out, there's no black colored alt, giving a rise to even more questions about the appearance of Dark Pit yesterday.
About kill moves: Because Pit felt so different to me than what I was used to I think I only got like 1 or 2 kills in my first two matches. I had a very hard time getting kills off. His fair or nair certainly don't kill, but iirc I do think I got a kill with his dair on a player with high percent. My friend was using Wii Fit Trainer in the first match and I really wanted to get a kill on him so I started just going for dash>upsmash. I hit him at 110%, didn't kill. Hit again at 130%, didn't kill. Tried to get him again at a little higher percent and WFT was able to get out of the third hit of the upsmash. So honestly, I have no idea how to kill with this character yet. I'm sure bair is good, but I had trouble doing aerials without the cstick at the bottom of the controller.
Random move tidbits:
Jab: He keeps both his 3 hit slower jab with the jab finisher as well as his rapid succession one. You can actually hold rapid one for as long as you like. It will only go to the finisher when you let go of A.
Grab: I'm so used to PM that I only tried dthrows. I tried getting some followups on it but just couldn't make it happen. I saw someone do forward throw and both dthrow and fthrow were similar to Brawl's.
Neutral B (Arrows): Arrows are super short and don't travel too fast when you don't charge them. I couldn't even complete a loop with it. It has much tighter curves compared to Brawl (and PM) though. The cool thing is that if you charge them completely, they travel quick as lightning and hit pretty hard too. Couldn't pull off a loop with the charged ones though. It might be possible, but it'd be tough.
Up-B: I actually never used this move in my first two matches. Pit's four jumps were all I needed most the time. It reminds me a lot of Fox's Up B, where you can change the direction by moving the control stick around after you've pressed up-b. I couldn't get it to go completely horizontal but it came somewhat close. Don't think it has any kind of hitbox on it though.
Side-B (Upperdash Arm): Wow, this move is slow. I don't really see how it can be used well at all except with a hard read. I'm assuming it has some armor on it, but I never really tried it out that much. It seemed that if you use in near the edge and fall off, you can't move again and will die (very similar to Falcon's Side-B in Melee).
Down B (Guardian Orbitars): This move was a bummer to me. I meant to use it in the first two matches but it totally escaped my mind. So when I did my match in the 3DS mode I had about a minute or two to try out every move in his arsenal in a training room with sandbag. It didn't seem to have a single hitbox on it. It only pushed the sandbag away with a windbox. Maybe it does something different against an actual character, but I doubt it. It only seems to be good to reflect projectiles, but the way projectiles seem to be nerfed (something I'll touch on later) it doesn't seem like that big of a deal. Probably only really useful in item play. Really hope someone proves me wrong on this. Didn't get the chance to think about how early I could get out of it. Sorry.
Up-Tilt: Gorgeous move animation wise. It actually has a decent amount of knockback and I wish I had tried out this move more. It might be able to kill, but I doubt it. Wish I had more time to use it. I think it had around 3 seperate hitboxes. I believe this move will be used much more than Brawl's Utilt.
F-tilt: I'm gonna guess that this move will be one of the most ESSENTIAL moves in Pit's arsenal. A really good amount of knockback if I remember correctly and it's range is nothing to scoff at either. The most important part is that you can reverse tilt VERY easily in this game. And reverse ftilt seems very scary for Pit's opponents. It's an immediate turnaround attack with a ton of range and good knockback. Really happy with this move.
D-tilt: Down tilt is one of my favorite attacks for Pit in Project M, but unfortunately I may never use it in Smash 4. It has a large amount of lag after the move is used and can easily be punished. Don't really remember how this sent opponents on hit, but it wasn't anything impressive.
USmash: Killing up in this game seems to be much more difficult compared to any other smash game which inherently gave a nerf to this move. As stated earlier it didn't kill Wii Fit Trainer when it connected at 130% on Battlefield.
FSmash: Similar to Brawl's. It has killing power, but also some endlag just like before. Nothing too interesting to say here.
DSmash: Also similar to Brawl's. Didn't really notice much difference.
Nair: Rarely used this move unfortunately, don't want to give wrong info on it. Didn't notice anything crazy with it except I thought it looked pretty cool.
Upair: I remember hitting a player when he was at low percent with this move. He got stuck in it for a while and he couldn't get out. Didn't really see the damage done but seems like a solid choice for when your opponent is above you at low percents.
Fair: It's basically what it looks like, a nair with an extended hitbox. The difference is that it does have some knockback to it that could probably kill an opponent at a pretty high percent. Might be good for off stage edgeguarding.
Dair: Does have lag like Brawl, but I don't think it had as much thankfully. I do think I got an upwards kill with this move too. Hopefully it'll be useful for Pit mains.
Voice: Definitely voiced by Antony Del Rio, thank goodness! People will DEFINITELY find his voice annoying. But if you're a KIU fan, you'll fall in love instantly. Couldn't hear that much clearly except one of his death screams which was loud and clear, lol.
Taunts: Same exact animations for each taunt but different sayings. His up taunt (I think?) is the same where you lift his wings and doesn't say anything. His side taunt is the same except he says "Is that all you got?" or something to that extent (I was literally putting my ear on the 3DS, lol) and he says "come on!" on his down taunt. Sorry if I misheard any of these.
Other stuff:
Him getting squished at the front of the screen after getting killed is just as funny as everyone elses.
He keeps his same 8-bit swing style when he gets the hammer item.
His winning pose on the 3DS wasn't anything too special, just him swinging his bow around (still a lot of fun to see). Couldn't tell it he said anything though, it was too loud.
We've mentioned this in other threads, but projectiles seem to be nerfed in this game. I literally cancelled out Megaman's charged f-smash with a single jab. Not sure what this means for arrows.
Magnus is an assist trophy. He showed up in my second game. Happy he's in the game even if just an assist trophy.
If you have any questions, I'll see if I can answer them.