In his matchups that aren't loosing he's flowchart as fuck and neuters the neutral game.
That's why he's cancer.
Also repeat after me 'if a character has a move that goes through clone that doesn't make it an automatic disadvantage'. I hate to be that on the offensive with a discussion but the sub community had a breakdown at the faint whiff of a ghost hurtbox.
Bartitsu was a 5-5 at best.
His d4 was horrendous on whiff. If you jumped it was an easy full combo. F1 is good but you still had to position yourself well in front of the clone also its a high and subs d4 had stupid range and low profiled and was really quick. It's not like mystic matchup where they can just machine gun bf2.
Bart's d2 was garbage so sub could ride his face like a jockey with his obnoxious jump ins.
Sub had counters for his counters and then was just a more complete character with better everything else.
Edit- just realized it wasn't you who said gm beat him but leaving my comment here for
@neveradestroyer