...matter of fact, Callis would KILL in AEW.
But Callis is trash too, though.
JR's main problem is that he was never really all that great of a play by play guy, but he excels at selling characters, storylines, and moments. As of right now, AEW has some cool high spots, but they're not really there yet for storylines or characterization that he can latch on to. That'll probably change once they have weekly TV.