Squirtle
1) His special movement options and all the stuff he can do with them.
I really don't see any special movement, just annoyance. Some like to run left to right which makes him look like that's an actual technique, which it isn't, but somehow fools the other player. I don't really know what you mean when you say special movement.
2) His air game and why ours can wall it but you still have to respect his just because of how fast he is...which brings up another point...how on earth is a turtle that fast?
You have to attack first, obviously. His fair and bair come out quicker, but it's not unstoppable. If you fight Mario or Luigi on a regular basis, this is basically the same thing. And he's not a turtle. He's a little boy in a turtle costum. Reveal his identity.
3) His fun filled BS grab stuff, as well as Water Gun having a use on us.
I hate his grab, but it's pretty avoidable if you're staying in the air and having him follow. As for his Water Gun, I don't find it as effective as Mario's F.L.U.D.D., but apply the same thing you would with Mario when returning.
Ivysaur
1) Ivysaur has a large anti-air game...but Ness' Fair is a defense tool...not offense...but still that is the main reason I can see people on the other board listing Ivysaur as a 7:3 on Ness
You know he's got some anti aerial options, so keep that in mind when you're fighting him. If he tries Bullet Seed, just SDI out of it. It really isn't that hard for Ness since he's not heavy. As for his uair and dair, stay on the sides of Ivysaur when you're going up against him. Those can be pretty lethal. And Ivysaur is 70:30 vs Ness? That's hilarious.
2) Ness can force Ivysaur to play his way IMO...because baseball bats are fun, and learning how to spot dodge is fun, because Ivysaur has some pretty wicked KO moves.
I have to agree on this in a way. Ness could possibly be forced to approach, but he doesn't really have to. Ivysaur's only projectile is Razor Leaf. My only gripe with Ivysaur is his f-smash. I tend to forget how close that reaches.
3) Ivysaur's lovey special moves and why learning how to SDI out of bullet seed will save Ness.
Yeah, like I said before, just SDI out of his Bullet Seed. It is an anti aerial projectile, but nothing that can't be dealt with.
Charizard
1) Rock smash and why baseball is fun and will do a good job at reflecting rock shards, also his other special moves are also able to be countered
I actually never knew the Bat could reflect the shards. However, because of its lethal power, I tend to avoid his Rock Smash at all cost. It's fairly slow, so you can see it. I usually handle Charizard after he does a Rock Smash.
2) Grab release BS, but also why does he have 9/10 of his moves being kill moves as well.
I find this stuff to be pretty lame. CGs, grab releases, it's part of the reason I'm not enjoying this game. There really isn't a thing you can do about it except stay close to the edge, find some platforms. I've only been CG'd once, so it must be pretty avoidable if that's only happen to me once out of the few times I've fought a good PT main. His attacks are strong simply because he's a giant lizard and he's at his last evolution.
3) His Fair being the worse thing to be hit by when you are recovering...speaking of that...he has some pretty neat gimp options...
I think Ness' fair out ranges Charizard's. I could be wrong. I know there's some ember that flies out of his wings, but that has no knock back. As for his gimping methods, his Flamethrower, it's similar to Bowser's. If you're above or at stage level, you're safe from that. If you're below, you're basically in danger. So there's not much you can do if you're below.
Just a quick side note about Ivysaur. His Vinewhip, the one that flings in the air like Olimar's Up B, it can sweet spot. I lost to a PT because of that stupid mistake.