Well, Gaara's sand has been able to match the speed of Amaterasu, he can block Susanoo's attacks and has discovered a sort of weakness to the technique by dragging Madara out of his Susanoo, he doesnt have to worry about Tsukuyomi cuz its a short range tech and Gaara is a long range fighter so can Gaara defeat Sasuke with his Mangekyo sharingan only?