This exhibition between Alucard and KoreyTheDragon (one of the best Subs/Quans in Texas) happened recently, and Alucard is doing some shit in the matchup worth noting.
SG Kotal vs GM Sub starts at 11:47, and the first round Alucard gets pushed around a bit and downloads Korey's clone patterns. Second round starts 12:17 and right away Kotal does.. nothing. He has has no threat of clone if he doesn't advance, and the only other range option, ice ball deals no (chip) damage but can still be parried, as you see shortly with a parry into punish on the start up frames of the clone toss for 50%. Around 13:55 or so, Alucard is cornered by the clone, and jumpback1 has a sweetspot to clip Sub's head if he rushes in, while missing the clone which he uses to escape pressure. At about 16:05 J1 also bops a clone clean from overhead. J1 is king.
Korey was unfamiliar some of his setups, and was lookin pretty free to tickthrows, so there is some variance here, but all in all, I don't think this is a 9-1 anymore.
All in all, I'd say SG vs GM, SG actually has the advantage at equal health neutral. He can parry all of Sub's ranged options, and has the option now to charge sun stacks and cash them in as needed. He can chill until Sub tries to rushdown, and then Kotal can play his footsies. I think this matchup has become a very spacing dependant, whiff-punish kind of matchup.