User blog comment:Knowall/I need some answers/@comment-17720060-20111001235554/@comment-17720060-20111002000348

Sonic Generations, from what many people believed, were supposed to have handheld Sonic games. But after the first few stages revealed that were from console games. And the console stages available were from the same Sonic games as some of the PS3/360 Generations stages are from. That makes me believe that the 3DS version of the game will have the stages from console games, but from the same video games as the console Generations are from.

If you don't understand, here's an example:

Sonic Adventure: Console: Speed Highway. 3DS: Emerald Coast.