More actual breakdancing.
Generally colder weather, if my eyes do not deceive me.
Bad guy is a dance instructor who controls the local jazz dance cabal.
The love triangle: Ozone and Kelly vie for Turbo's affections.
One scene features a paraplegic breakdancer who demonstrates what dancing is really about, apparently.
Breakin' 2: Electric Boogaloo
Music with actual real instruments.
Less believable ending, which is saying something.
Bad guy is an evil developer! Woohoo!
The love triangle: Kelly and some other woman who I wasn't sure who she was vie for Turbo's affections. (Meanwhile, Ozone pursues a barely pubescent Mexican girl who doesn't speak any English.)
One scene features everyone in a hospital (doctors, nurses, patients, receptionists, and a suspiciously large number of random people in matching costumes) spontaneously going into a dance number.