I don't think the Wizard even had powers until the Bronze Age. It was just a schtick in the Golden Age, and I don't know that he even made an appearance in the Silver Age. Shade was basically at Shadow Lass levels until Robinson upgraded him in Starman. Dr. Fate has always been impressive, but he did have trouble going up against Solomon Grundy.
Correction: he was downgraded considerably towards the end of his first run -- when he was wearing that silly half-mask. I think he was limited to super-strength, flying and some levitation.