To elaborate a bit since a lot people said shox and S1mple. The french at his peak as s1mple now, just outskilled their opponents. But it's the same on every situation on the game because of how good they are, not because they're particularly good at clutching.
Hiko before and Xyp9x now, are players that outsmart their opponents on a clutch and go way above their usual average skill level.
It's like if you try to tell me that S1mple and Zywoo are the best awpers ever over KennyS and GuardiaN, when they aren't even full awpers as the other two.