Ok, I haven't played the demo since the game released, but I didn't remember having a problem with the controls even though I do think I remember them being like you've all said. I just don't remember having to jump and shoot for some reason. I'll download it again and see, but either way, I still won't buy this until I see that they aren't releasing any more unannounced DLC.
Hell, I haven't even bought Sonic Generations yet because of this. I hate buying base games at one price only to see the complete version come out at the same price right after.
Edit: Ok, I played through again. I guess I forgot about the shooting since there was only one real opportunity to use it. I don't think the game is intended to have you shoot and jump at any time though. In the video that advertises the game after the demo the character is always in one place shooting. It didn't rely on shooting in the demo area so I wouldn't worry about it.
Edited by 60fps, 05 December 2012 - 11:40 AM.