it's true that tournament results reflect that, but right now at the top of melee there is still enough character diversity and character LOYALTY and personal matchup knowledge which will throw people off. for example, hbox shroomed and axe to a degree.. they all have potential to win or place high at majors.
and mango isn't pretty good with any character, he mains fox/falco/falcon and teams puff. the other characters he pulls out are for grudge/pride matches or messing around.
and yeah, these are players i'm talking about
but when i think of pure characters, i still think fox is the best. his properties are just so good.