I actually plotted out the pages of Vader attacking in my head.
It would be like Kid Miracleman. That's one of things that always bothered me about the SW universe. They've rarely shown what the Jedi and the Sith are truly capable of.
Now imagine the Sith version of that with the Kitty people. And they don't even have the big stomper thingie. There was enough metal and rubble lying around, Vader could have simply turned the whole area into a giant blender.
I get why he didn't. But the frightening thing about Vader is that he could.