Since day one, fans of the franchise have always argued that alterations made to Brawl were done to appeal to a more casual crowd, with the infamous and unpredictable "tripping" mechanic being a beacon for all that was wrong with Nintendo's ensemble fighter. For hardcore fans, the skill-based gameplay of Super Smash Bros. Melee was cast aside for the accessibility and fun of some of Brawl's unpredictable quirks.
Anyway back on topic. Let me say that Brawl was made to play more slower paced than Melee so that people wouldn't abuse the wave dashing and wouldn't exploit some characters like Marth, Fox, and Captain Falcon.
It was made a bit slower so that people wouldn't exploit cheap moves. But it still takes a lot of skill to get good.
Why don't you people go try the Alpha series or the SNK series...
I could rant about this for hours.
Tournament level Smash Bros. is like the Special Olympics of competitive fighting games. The games are fun, and their accessibility makes them great party games; but there is a serious lack of depth and balance to these games to put them at the same level as the Street Fighters, Virtua Fighters and Guilty Gears. Melee was as much a competitive fighter as the Dissidia Final Fantasy games.