I do not think this looks better than the art of Sonic Unleashed on the HD game consoles. It is just mostly deep colors going against one another, which sometimes kind of bugs my eyes a bit, not a big issue though. Some of the sections like Shamar in Unleashed were too bland, but at least it all connected together fine.
What bugs me the most is that the best-looking areas are the parts of the levels in the BACKGROUND, not where you actually play. Look how flat and basic the platforms you run on are. At least they actually sometimes encouraging going backwards this time, though.