“Keep your friends close, and your enemies closer” is often misattributed to Sun Tzu, but it’s still a good joke in context lol.

I’ve read it too (a long time ago, in a galaxy far… ehm, you know what I mean). I remember it was pretty good and interesting read. This sarcasm is more like a joke - when OP asks why superpowers can’t get along, just recommend book about warfare and getting upper hand on your enemy.