I am certain that Tobi did not get hit to the point he will not get back up. Since Kakashi has reached his limit for now, how will they land a hit on Tobi now?
I really hope Kishi won't troll us this time. In the image below you can see that the lower half (w/ the crack) was not thrown off his face. I really hope also that it is not like in Tobi's fight with Konan where pretty much the entire lower part of his mask remained. If that's the only blow...