A world full of universe-continuity superheroes
For this level of threat, I figure Dr. Doom would power up and get involved -Arbalest
That's the problem with a world full of universe-continuity superheroes. Got to the point where you had to send the Superest Guys off-planet or into another dimension or the distant past or something to make sure the B string guys could square off against Cosmic Threats.
Everytime Batman is about to nab the guy. Bam! There's Superman. Flash is racing to the rescue. Bam! Superman's taken care of it. That's how it would be.