I'm probably competitive-hardcore. Well, sort of. I don't own Melee or Brawl, just Smash 64, so it's hard to say that I fit the definition for hardcore. I bum off of friends and roommates. In school they play it, and my roommate plays it, so I never got a copy (nor a Wii) for myself. I love the games though, and no matter how many changes they made for Brawl, it's still an amazing game.
But without a doubt, I'm competitive. I can handle 6-stock free-for-all with items on Temple but mostly my love for the game comes from 1v1 4-stock on FD, Battlefield, or Animal Crossing. I get upset whenever someone wants to play on Spear Pillar or Mute City, because I can't stand it when the stage kills you. There should never be stage kills, at least not when playing against another competitive person.