It’s a classic trope – the cover shows a good guy gone bad, having defeated other heroes, only for the story within to reveal . . . it’s a doppleganger . . . or he’s mind-controlled . . . or the fallen heroes are the evil twins . . .
This is a pairing I’d like to have seen – the Teen Titans and the Super Squad of Earth-2; Robin and Ravager butting heads; Star-Spangled Kid confused at Wonder Girl being in charge; and Changeling slobbering over Power Girl.