I mean come on, you forked him on move 18, that's not a positional crush.
Although yes, that middlegame (after 8.Qxb6) often leads to positional crushes. It's been a while since I looked at it, but maybe 9...h6 is better than 9...b5 because a big part of the "crush" is how that bishop cuts through white's position and controls b1.
97%+ accuracy. only 3 moves werent the absolute best computer moves