its possible... the best thing imo is if batman (somehow) created a device that reversed magneto's polarity thereby turning him into a magnet... or find a way to disable magneto...
Magneto's too fast and too powerful. Unless Batman can come up with a Neutralizer like Forge did (which I doubt he could, since Forge can build ANYTHING,) Batman and Co. lose.
Batman never really won against Supes. During Hush he was nearly killed by Supes, and would have if not for Supes fighting the mind control, and Selina throwing Lois off the building.
__________________ If you try something stupid, and it works it ain't stupid.
Batman wouldn't be able to invent and build a 'anti magnetic suit' or wateva in ONE day....thats just stupid...he's good, but not that good. to do something like that, you would have to be forge or sumtin....i think the best batz and co could do would change all their weaponry to plastic :P