Originally posted by StiltmanFTW
It was Slade's guess that they were designed to fight Supes --- in fact, it's the second time Slade guessed that, saying the same thing before about the other pair of gauntlets, iirc.
Doesn't necessarily make them Superman-busting gloves, the only such pair existed in an alternate universe:
https://tinyurl.com/y942c2b3
Even if they were what Slade said, they relied on an external power source... Colossus doesn't shoot energy beams, they're gonna run out of power before they do any damage.
Batman didn't deny it.
Except Slade only charged them in issue 32, when he was chasing down the super hero with a death wish.
In the cave, they were sitting around in the plane, and weren't hit once.
Just because the staff charges them, doesn't mean it doesn't have it's own internal power source. The absorption was probably just a defense for hv...