You haven't played it yet...
It needs some serious tweaking to be amongst the best. The main problem being the characters jump. Whenever you jump, the screen follows you up too high, so the floor becomes invisible and you have no idea where you are going to land. This needs changing before I play it for any length of time.
The colours and artwork don't seem like they warrant an AGA chipset but that's just my opinion. (but it doesn't effect gameplay)