If you say so. I see the exact same game - go right, jump on baddies, pick up the occasional power-up, jump on a pole or whatever, eventually get to a castle, rinse and repeat. There's nothing inherently new about New Super Mario Bros. other than the graphics and maybe the twirly special move, if you could count that as innovation. The game nails "platforming" as-is and does not require groundbreaking changes, much like Dynasty Warriors games nail the "hit every grunt in sight in the face" as-is and don't really require innovation, just new content and mild adjustments.
As far as development is concerned, Omega Force focuses on making the A.I. count as high as humanly possible, that's the main focus. The whole point of the games is to let you kill countless waves of enemies with your attacks, throw them around like rag dolls and cause general havoc - it's a pretty resource-intensive task.