Originally posted by Mindship
Those used to depending on powers (eg, Thanos, Loki), now bereft, may be at some disadvantage. It's not that their intellect necessarily came from their powers; it's that they used their powers--their evolutionary strengths--very smartly. But now the playing field has been leveled. Imagine an expert archer, so to speak, gone blind. He's then told to compete with other archers, some of whom have been "blind" their whole lives.For making weapons, there's Reed Richrds, Tony Stark, Von Doom. Batman, too, but on smaller scale. For strategy and tactics, Batman first comes to mind, but also Doom, Lex Luthor, Namor, Aquaman (men used to leading other men, armies).
But overall, with everyone reduced to more/less peak human, the ones who have always been peak, I would think, would be the ones now most dangerous.
Just to play devils advocate (as I tend to agree with you) I don't think we should rule out the cosmic level characters just yet, assuming that they get to keep the knowledge they previously possessed. While they may not be as clever as, say, Reed Richards, they would have access to technical knowledge hundreds or thousands of years ahead of most of the Earth based characters.