defcon 1 said:
This is the point where I rape your eyes(reading) with Smash Bros tier listing talk.
The problem with resolving this using Smash Bros. is that the characters have to be at least semi-balanced in order for the game itself to work.
Case in point: Mewtwo. Canonically, it shouldn't even be a competition between Mewtwo and everyone else. In Smash Bros., though, matches involving Mewtwo are often one-sided in the wrong bloody direction.
More examples: Pikachu not easily destroying Squirtle, Samus not completely destroying pretty much everyone else, Peach and Zelda standing a chance against Bowser and Ganondorf respectively... doesn't work.
On-topic, I'm going to say Link. Mario might be able to grow huge, shoot fire, deflect projectiles, jump insanely high, but then again Link can also do all of those things (Giant's Mask, Fire Arrows, Mirror Shield, Roc's Cape),
and he has a sword, boomerang, bombs, hookshot and various other weapons depending on his game.