>>149412046
Well I think the actual reason is that James Gunn just doesnt know what to make of The Batman Part 2 yet. He knows that its a popular property but Matt Reeves needs to sort of give James Gunn an in to either have a proper tie in or at least a nod to make it seem plausible that both properties can coexist. If whatever Matt Reeves writes doesnt allow this Superman to exist then even if James Gunn's movie made a kryptillion dollars Gunn would just have to bite the bullet and make his own Batman(also theoretically he CAN just have the next Batman end in part 2 and bring in Robert Pattinson without ever making a direct movie sequel, worked out for Hulk up until Endgame)