NSMB wins for me. I love the interactive multiplayer elements of the title and the platforming felt more meaningful and fun.
Rayman was too fast, the platforming felt dull, and there was very little interaction in co-op games. Many people hated the direct interaction in NSMB (grabbing, throwing, jumping off heads) but I felt like it gave true value in advance playing styles.
My only gripe with NSMB that they really need to fix for the Wii U is to not make certain stage items singular and instead make them specific to each player. When I have to swing on 4 vines in a row to cross a gap, my friends have to time their jumps PERFECTLY with me in order to grab the same rope or they fall/die. If the ropes were for each individual person we could cross much more easily.
