I saw an old video of that once tried to find it for about a hour -failure-
but basically it is not really hitstop. Since Makoto's 'A's are so fast and don't have a chain cap like Tao, if Tager stops dashing once she starts hitting him with them he will get hit no matter what and get squirreled to death. Meaning all you need to stop him is to mash dat A. I never ground dash when using U.Tager...his air dash goes so hilariously far, I don't need to