I personally think the game doesn't touch the original, seems slower, and wayyyyy easier when compared to Sonic 2..
When I play it I felt like I was getting assisted when I jumped and everything, plus when you roll in the air in sonic 2 you do not come out of your ball, on this one you do and it makes you vulnerable to your enemies, which caused me to lose a lot of coincs.
This game is everything I was expecting it not to be, and I am glad I tried out the trial version first.