Special ability or skill?

[LOS ABRANTES FC]

So, i have a player with ok crossing ability like 85% and he is a corner specialist. I have another player with 130% crossing but no special ability. Which player should i use on corners.
so far, i feel the 130% dude is doin better

Play a friendly lining up both. Don't set any player as CK taker and see during the game who will take the ck. That one will be your best ck shooter (probably will be another player but that two). But generally when you buy an SA specialist, he's really good at that.