>>713359913
Ragebound looks more mechanically engaging but Shinobi just looks like fun. Former will be better for score chasing, the latter for one satisfying playthrough (unless they surprise me). Ironically I think NG4 will probably be closer to that the one satisfying playthrough side of things.

>>713361283
To me Shinobi can be a lot of things; Revenge, Shadow Dancer, III, 2002/Nightshade, and 3DS all do different things that are worthwhile (you can even count the GG games and X if you want). My favorite is actually 3DS but I'm probably alone there.