I don't think Steel was being idiotic at all, I think match-up ratios are idiotic.He was disagreeing with that sentiment and attempting to explain why... and the match-up ratios were an illustration. That's not idiotic, that's practical.
M2K you mean.MK is not a bad player, but his style of play isn't good for playing against Marth. He doesn't like "playing gay" for example.
Sure, he makes it work, but that doesn't mean that there aren't much more effective anti-marth strategies.
And his style is fine for anyone he plays against. Do you honestly think he plays the same against every character he plays? Have you seen him play against Ice Climbers? All he does is run away. Jason knows what works and saying his style is bad against marth when he doesn't lose to any is...strange. It's a preconceived notion that a certain style of play is the best against marth with meta. Isn't Jason the only MK to not have dropped a set to a Marth player? He knows what he's doing.
Character vs Character is far less important then Player vs Player at top levels of play.