Back in my day (pre nu 52 garbage). Batman would get his behind dominated by the stroke, it didn't matter how prepared he was. In simple terms, Batman is at peak human strength, while, the Stroke is a SuperHuman with enhanced cognitive abilities, and a healing factor. Batman could probably beat Captain America because he knows where exactly to punch for pain and lights out, even superhumans that have faced him admit to that. And Captain America was gifted his powers, and has way too little experience. Bit when you take someone's equal in terms of brain, and add a healing factor with enhanced reflexes, it's over. The stroke is probably smarter too. The reason why he never kills Batman is because he admires him, he acknowledges the effort that a regular human put in for an immense transformation. I doubt Slade would ever kill Batman, he needs someone to marry his daughter. But no, Batman doth not stomp.