I might be biased, but I had the rail stages in mind when I was writing that. Or like Final Egg vs Crazy Gadget, or Pyramid Cave vs Red Mountain. They're all linear, but I think the SA2 stages tend to branch out less in comparison. Nope. Classic Sonic's design inspired by his look in the classic games - check. Green Hill zone - check. A different gameplay style focused on platforming - check. But I agree that it doesn't play as a classic game. I'd say it's more for Generations Classic Sonic fans rather than the "classic" classic fans. And it does have Sonic 4 elements too, I think I heard remixed parts of Sonic 4 music in it, which is also not a very good thing.