Actually the super-lenses aren't that outlandish. No seriously, go Google "mojo vision" right now. They've got a working prototype that's not very far removed from the capabilities of Bruce's contacts in this movie.
And plenty of action heroes have survived explosions like that. Last Indiana Jones movie had Indy survive a nuke just by going in a fridge.
Just saying that there's a large gap between what we saw in The Batman and the rest of the Justice League.