I'd like you to be right really. I enjoyed the mechanics of Ep I.
While I prefer momentum based physics, truth is the "excess" of control we get over Sonic makes the game highly playable on portable devices (one of it's major markets, if not the biggest). Sharp in-air control, useful lock-in homing attack.. The game is great.
What one could indeed question is if such change of gameplay dynamics should prevent the game from having "4" in the title, since it's not an evolution of the MegaDrive games but an effective change.
Then again, I think that if that's your problem with the game(play), you're an asshat. The game could be called "Sonic roopy poopy mega shit in your pants 6" and would not be any worse because of it.
Good game, misleading title? Perhaps. But a good game is always a good game. And that's what I felt about Sonic 4 Ep 1.
I do know some people have gripes with the sharper control, but personally I enjoyed it.