hit extreme topspin balls that bounce over the pusher's head.
I love pushers and always play them this way. Pushers give me a nice high ball right in my strike zone, then I put as much topspin on the ball as possible and the ball will bounce over their head. They can't get their moonballs back deep when this happens as they will have to bunt the ball with an overhead grip, so you get a very easy putaway shot that doesn't have to be close to the lines, and even the fastest pusher won't reach it.
Pushers just fall into my playstyle completely. Flat hitting ballbashers are a different story.