Super Smash Bros. Brawl felt frenetic. To me, it seemed like too much was happening on-screen to play with precision. But apparently people wring ever moment of control out of this fast-paced game. Just not the first time they play.
In my games, Brawl always had a lot going on. A power-up poured out 2D sprites lifted directly from Advance Wars. Another caused a Nintendog to briefly paw playfully at the screen, for no reason other than to annoy us. I just laughed at the puppy as I was knocked off the platform to my loss.
I like my fighting games with more of an immediate sense of cause-and-effect and without this power-up focus. But I could see the appeal of Brawl. It had so much happening that I was always entertained. And the sense of humor and strangeness -- Mario versus Sonic in a fighting game -- also hooked me.