Okay, here comes my point by point based critique which ill make as i watch the video.
1. Still, too much shielding, and the pkthunder at the beginning was a bad idea. Pk thunder against falco, and all he has to do is fast fall. A smarter move would have been to wait, and just utilt as falcos will generally dair right in the beginning if their above you.
2. Your still rolling way too much. You NEED to learn how to wave dash more comfortably and dash dancing.
3. JC all of your grabs. Your grab stumbling way too much.
4. There are points right in teh first minute where you land a fair and then you go to a dash attack. This would be good against some enemies but never against a falco or fox. Keep in mind that your dash combos dont work as well on these two as they are so heavy. And also remember how deadly your grab is. You know that grabbing is important but based on the first minute of the first video, your just grabbing at the wrong times.
5. At about 1 minute in (round 1 part 1 falco) you tried to pkthunder 2 onto the stage. Your lucky the falco didn't punish you cause that move could have cost you that stock. Think of it this wya, you wouldn't have landed the pkthunder 2 on him and all you would have received was unneccessary lag, which would have allowed your opponent to do a dair shine combo to your death. Its a horrible habit that i also used to have with ness, where i wanted to pkthunder2 back on the stage all the time. Its a result of habit, as well as playing too many newbs who get hit by the pkthunder 2 which lends you as a player to rely on it even when its a bad decision.
Oh yeah, this happens again at the end of the the round 1 part 1 falco vid, cause you get knocked closer to the stage. You dont need to pkthunder2 there, what you can do is wobble (press left right left right on the analog stick) which gets you out of the falling/spinning animation, and then air dodge onto the stage.
6. Just a rule of thumb against falco: After hes above 80% your better off nuetral airing than up airing simply beccause its faster, has a wider hit box, and has a horizontal trajectory which makes it easier to kill falco, cuase his recovery sucks.
7. Falco Short hop lazers and is always in the air. AGaisnt aerial opponents the dash attack is relatively useless. Your better off DJCing or SHFFLing fairs. Its hard though...finding hte balance and being able to get air bound without getting hit by lazers. My other suggestion is practice your tilts. If hes not letting you get air bound try to wave dash up to him and ftilt it, but aim it upward. I never realzied it, but aiming the ftilt can be EXTREMELY useful against shorthoppers.
8. You dont need to bat on the edge against falco when hes at a high percent. When your edgeguarding, think of the most accurate way in which you can hit your opponent away from the edge with just enough power so they cant get back. Lets take these factors into consideration.
a. Falco at a high percentage means relatively weak hits will knock him far
b. Falco's recovery sucks as far as distance goes
c. FAlco's recovery gives him a lot of choices at which where to land and at what angles to land.
The bat is least suitable if falco is at a high percentage simply because when you bat your grounded to one spot, and its relatively slow coming out. A much mroe useful approach would be a Short hopped or DJC'd nair since the nair is quick, powerful, and with a hop can cover a large distance.
For reference at which point im talking about where you use a bat when you dont need to look at 2:00 in round 1
9. The reason your mofo combos aren't working is cause your DJC is too slow and your not goetting enough horizontal movement in your DJC. This can be rectified. Simply Dash before you DJC (uthrow, dash in the desired direction, and THEN DJC), and to make up for hte lost air time by the dash, go from X->Y->A. Sage, you suggested this to me and it works WONDERFULLY. I know it takes time to get used to but once you have it down, it helps immensely. ESPECIALLY against falco's and foxes because it allows you to do a headbutt so quick you dont even need to set them up in a grab. You can just hit them when they approach you with a shorthop.
10. 22 seconds in on part 2 round 1 falco, word of advice
Using ness's pk thunder 2 as a weapon is like using fox's firefox as a weapon: Use it rarely, sparingly, and only as a mindgame where it will work (almost never).
*Proceeds towatch round 2*
1. Okay, good pressure on that platform, Theres a point (40 seconds in) where you dash attack when you should grab. I see this happen a lot with you. You seem to spam dash attack when there are times when your close and you should just grab. Also, against falco, your better off SHfairing or DJC fairing rather than dash attacking. For that matter, you need to SH nair more as well. It as well as your ftilt (and bair) are going to be your number one horizontal killers, and thats exactly what you need against a falco. Oh, and dont absorb his lasers...the only time thats a good thing to do is right in the beginning of the match cause tahts when falcos camp and try to get damage on you, or if your opponent is just far away SHLing you to rack up extra damage.
2. Once again, too much Bat. Bat is good, but only in wide areas, and when the spacing requires close quarters but not TOO close quarters. The fact is if your close enough to bat at point blank range (i.e. at 48 seconds) then you might as well grab.
3. HAH! Props for landing that bat at the end. That was so rediculous.
Overall good Ness but you have to use more mindgames. Watch these videos back but this time pay attention to the falco. You'll notice he's WDing back and forth and all kinds of things. Meanwhile your approach is at best predictable. Still though, better than most Ness's ive seen. You could just use a little more work.
Hope i helped again.