Supergrap feels like a rubbery felt, Tourna tac is thin and rubbery, and Wilson Pro has a moderate amount of tackiness with an average thickness, in my opinion. I prefer Wilson Pro out of the three because Yonex doesn't feel cushioned enough for me, and Tourna Tac is too slippery with my sweaty hands.
Once they are slightly worn, I find no difference between Wilson Pro and Yonex Supergrap to be honest. But yeah, fresh out of the pack Supergrapy is a little more grippy and tacky than Wilson Pro.
So far I'm also liking the yonex over the Wilson pro- it seems to have a bit better tack-lets see how the durability lasts. But to be honest they are both one of the best over grips. They go hand in hand. Can't go wrong with either