I forgot how absolutely tiring it is to play against Megaman. By the end, I knew I was making mistakes, but I just couldn't stay as focused as I needed to.
Near the middle of our games you had tightened up your play quite a bit. I saw less of the Forward Air to Back Air strat and more ground based approaches.
Though I'm the last person who should be giving anyone advice, two of Ness' moves that I tend to fear the most in my style of play are his neutral air and his back throw.
A short hop to quick neutral air tends to punish my tendency to run in and grab when you get hit by a metal blade (and at higher percents you can get it off before I get the grab off), and well, Ness' back throw needs to explanation. There were a few times when you could've grabbed me, but opted for the dash attack. I'm not sure if Ness' options are better off of a dash, but from my experience playing against him, it seems like there's a lot more to do out of a d-down throw at low percents or a back throw for the kill at higher ones.
Anyway, that's more than I intended on saying. Your Ness is great already! Great games!
EDIT: Alright Commander! I'll add you and have a room up in a jiffy! I'm NNID: BlackMage