Well. Let's bring up the heat, then.
Brawl has fair balance when you are trying to compare characters to characters on whether or not they can be played equally by people with equal skills. When I mean fair balance, I do not mean perfect balance! Perfect balance would mean constant sudden death matches, even though that happens most of the time with me. There is some flaws with the speed characters and the powerhouses. Oh, and those characters who can FLY.
Speed characters usually ARE the powerhouses, since they can hit and run without even a graze. When someone like Ganon is trying to hit Pit, it's sad to see his constant slowness be ridiculed by Pit's oh-so-darn-deflective mirror shield.
Wait. Why am I bringing up Pit? He's very unbalanced, and the scales usually tip in his favor in many battles. I can only see him losing when fighting another player of equivalent skill who will do anything to clip off those wings of his. But then again, he's knocked out to the side easily...so I guess that's in favor? Yes. No. Maybe so.
Point is, speed characters got a little treat in this game, to further their sweet tooth. The powerhouses were told to stay off the soda.