The thing about reversal spin is that the spin will come out before the pizza hits him off of d4, b122, b12, b14, f34, f1b2, and just about any other string into pizza, except 114 and s4. that's why that matchup is tough for kotal IMO, cuz he has to gimp himself if he wants to do anything in that mu, reversal spin is so damn good against kotal. Also you let him jump in most of the time, b1 is a good AA and in bg can lead to a nice combo into totem setup depending on how ready you are to confirm. f2 also excellent however that one is far more of a read AA not a reactionary.