Looks like it could be better than Unleashed--mainly because it skips the gimmicks (the sword looks like it adds to the speed gameplay) and focuses on what Sonic does best.
"The game plays an awful lot like Sonic Unleashed with a focus on speedily traversing pretty landscapes with a mix of 3D and 2D platforming. The difference is, of course, the sword. Frequently Sonic has to slow down and slash his way through errant knights and obstacles."
Bold = Good
Underline = IDK.
Im still interested however.