User blog comment:WaterKirby1994/Why Generations Shouldn't Have Been Praised/@comment-477304-20171114152221/@comment-477304-20171114193738

Shadow the Hedgehog was a spinoff and a controversial game, plus it's not really relevant to Sonic, so it makes perfect sense that Shadow the Hedgehog would be excluded. Again, I would prefer few, well-made levels over loads of bland levels like Forces.

As for the story, I don't really care that the Perfect Chaos fight isn't 100% accurate to how it was in Adventure and I doubt most people care too. The game's primary focus was to celebrate Sonic's past, so it doesn't really matter that the Perfect Chaos wasn't exactly the same. The fight itself was still well-made and fun to play and that's what matters most.