Sasuke was actually ranked higher than Naruto in the Naruto Databook for a while
I'm sure until all the way up to the point where Naruto mastered the new Rasengan and achieved rank 1 Sage Modo, Sasuke would always be superior.
In powerlevels Naruto still takes the cake. Destructive abilities far outclass Sasuke.
Wind Rasengan pretty much destroys anything and over a ridiculously wide area. Its practically a slicing nuke. The closest thing Sasuke has to that is the Amat, and while its power is more absolute, its destructive ability is super nerfed by the fact that no ninja was ever actually hit by the stupid attack in the entire series. Sasuke's chidori now just looks pathetic in comparison to all the crazy versions of the regular rasengan (in the new chapter, a giant one). Naruto easily wins in offense.
Susano provides more defense for Sasuke, but Naruto makes up for it with Sage modo's increased recovery, and his clones taking hits for him. Not as good, so Sasuke wins in defense.
Sasuke's biggest problem was always running out of chakra. Also, his eyes bleed so fast, he usually can't win in a dragged out fight. Naruto on the otherhand, has far more chakra than Sasuke does. Sasuke can make up for this with his transformation, but so can Naurto with the kyuubi.
With Sage mode, if Naruto is properly prepared, he not only has more chakra than Sasuke, but he can REPLENISH it twice. This is probably the biggest advantage.
Naruto Sage Modo > Sasuke Susano