Well, right. My statement was incorrect.
I meant, for one, you cannot live through a Sonic Blow SinX if attacked by it just once, thank you Kiels.
Snipers don't use shields either and SinX could spam Backslide in order to run away from you and appear somewhere else. If a SinX is skilled with backslide I believe they have the ability to count how much it'll take to get to you while you move and reach you with Backslide.