Gaara can bury underground , Gaara created a desert around him as a 12 year old. Imagine what he can do now. He simply fluds the battlefield with sand and picks Sasuke apart while he is underground. He doesn't have to even break Susanoo(which he probably can) since he has sealing abilities. This is me not even trying to argue, this is a bad matchup for Sasuke. Don't be so salty.
