The worst sequel to a game?

[Ninpanda]

routsounmanman said:
ioi 2

F**K YOU, THAT GAME WAS AWESOME!!!1 

On topic, though...  If you count Sonic Adventure 2 as a predecessor to Sonic Heroes, then definitely Sonic Heroes. (The game wasn't absolutely horrendous, but Heroes didn't even come close to living up to the standards of SA2...