i read in the mlg review articles that m2k already knew the matchup thanks to snakeeee, and all he did was run up and shield lol
i know for a fact is she has to mix up her recovery, you have to know the matchup to beat her (mainly her gimmicks, just like ours)
like once we're inside within our jab range, she can't really do anything (maybe spotdodge utilt, but i've never seen it before, frame trap??) pretty sure our jab beats hers as well, one of the main things i try to avoid in the MU is that Dsmash, that's a easy 35%+ not to mention she juggles the crap out of luigi.