Smash Bros. is widely considered by the Smash community and the fighter community to be one of the most tech-driven games out there with a very complex metagame and vast potential for depth. Comparing it to Mario Kart is pretty ignorant of you, and I don't mean that as an insult. You just clearly haven't been exposed to how Smash is really played.
As far as I know, Smash is the *only* fighter where button mashing is not a viable option.
kinda true that, but unfortunally the vast mayority has a simple rule:
NO ITEMS
SHEIK/FOX ONLY
FINAL DESTINATION
thats the rules by most of tourneyfags play, unfortunally the game is a brawler, where playing with items in any stage, with any player makes you a TRUE player.
Button smashing doesnt work in any game if the oponent is a good player. PERIOD.
i'm kinda shame though... i'm a button smasher in SC3... but i hate the controls in the PS2, oh well