That's just people overreacting. First its oh we hate 3d Sonic game we want a sidescroller, so they get one and complain when the game is still being made and can be fixed and still in testing.
Besides check this out
http://www.xbox360achievements.org/game/so...1/achievements/
Golden Flash
Clear all Acts as Super Sonic 10G
Sooo that tells at one point you can use super sonic in every level
Get Sonic's Ultimate Genesis for 360 and Ps3 its only $20 and has 40 Genesis games including sonic 1,2,3, and sonic and knuckles only bad thing is no lock on