I liked your fair fair up smash combo you did early on. Too bad he was too low to die from it.
I use up b a lot to kill people too but only when I'm underneath the ledge. That's how you killed him the first time because it throws him up against the bottom of the stage. I don't think it's killing ability is good enough to merit doing it in mid stage or even just at the ledge, unless he's super high % and he's in your face because even though it might not kill him, it will get him out of your face
At 2:10 I think you could just just grabbed the ledge and rolled up and would have gotten the kill and not have to chance your 0% life when you died with the up B but I will give you ballsy points for that one =)
There is also a point in the match but I can't find it the second time through where you were left of the stage and falcon was grabbing the stage. I believe you up B to literally land on the stage. I find that a lot of the time you can up B and land with your feet on the stage, you can actually just wait long enough to fair the person on the ledge since the invincibility seems smaller. At the very worst, you miss and can up B from lower on the stage. At the very best, you got him below the stage now with the ledge grabbed. I really really hate how there's a lag once you grab the stage. It's only for a few frames but that few frames makes a huge difference when it comes to comboing. Say in this situation falcon was to jump up and you fair him on top of the stage. If you grab the ledge you have to wait before you can jump up there and attack. It totally takes away a combo and aggression. It gives him an easy out. Very annoying and this holds true for all characters not just marth.
Other than that, everything looks pretty good. You tried to grab him once out of immediate stand up. I've never done that or seen it work, I figure it was mind games. I would use uair a lot more in this game and I tend to only utilt at low percentages (for combo reason) because it doesn't have anywhere near the killing power it used to. uair is nice for killing. I think it has a sweet point to it, but I dunno. Sometimes I'll jump forward at people and uair instead of forward air since fair has such a knockback. If you know you can get fairs up close though, they have like no knockback so they really are good for comboing.
I thought your Marth was good. Take my advice with a grain of salt though
Put some vids up of you against MK and Wolf. 2 hardest opponents imo
