Well the music in 3 is better, and there are more tournament options. The announcer is very dramatic about everything in part 3. There is a slight improvement in the graphics and the camera tends to move in and out a bit more. However it's pretty funny, when the players are just standing in part 3 they seems to be doing a little dance..
Oh-the crowds cheer louder in part 3 but I didn't notice any chanting as in part 2. Scoring cutscenes are redone also.