>>722962165 (OP)
Some time ago I replayed SA1 and 2 back to back and I was surprised with how better SA1 was, I enjoyed most of it but I wish Amy had better acceleration and Big wasn't that bad but maybe I was lucky and cought Froggy quickly in each stage, aside from that I enjoyed the story more as well. 2 in comparison I only really enjoyed the speed stages while treasure hunt stages can be a pain to traverse and the linear radar doesn't help much, lastly the mech stages were easily the worst, the later ones are too long and the mechs are too clunky compared to S1's Gamma.
Even the speed stages despite both being good, SA1 were more fun to master since the spin dash is better suited for making your own shortcuts while 2 stages are usually more on the "narrow" side with more focus on set pieces like ramps and rails.
Also SA1's soundtrack one of the best vidya OSTs ever while 2 is only one of thr better Sonic ones, if that makes any sense in terms of how to scale them.