They are pretty high, but that doesn't matter. The Third Raikage is nowhere near as fast as A, and we have never seen him jump any higher than normal, so we cannot say he can just jump up into the air where Muu is... nor would I possibly believe that the jumping Raikage has more mobility than the flying Tsuchikage in the air, all this besides the fact that Muu can just fly higher, basically as high as he wants.
With that out of the way, it is extremely doubtful the Raikage can get anywhere near Muu, while the Tsuchikage has the perfect solution to his opponent's seemingly inpenetrable armor-- jinton. That's not even considering the jinton beam, which he probably passed on to Oonoki and so knows it himself. Muu wins mid dif imo.