Thank you Antar for the stats!
UU players must be furious with the addition of Chansey. I recall seeing people posting things along the lines of "Oh dear god do not let that damn blob drop!" I guess things like Chandelure, Raikou, and possibly Nidoking are going to drop a bit in usage.
I am also surprised to see Scizor back at the top of OU. I guess without Genesect running rampant it found a way to reclaim the number 1 spot.