Gender: Unspecified Location: Speedblitzing around the universe f
That's the thing - there are different levels of reality warping. From something really, really like long Longshot, to warping reality like Proteus, to controlling reality like Franklin. We haven't yet seen the extent of Magneto's reality warping yet since it's only a month old. It could be as basic as total matter control, in which case he's on par with the Surfer, or it could be Magneto snapping his fingers and completely unmaking Surfer atom by atom. My guess is that it'll be somewhere in between. In that case, he can exert a greater amount of control over the physical universe than the Power Cosmic. That would obviously give him the advantage over the Surfer.
Everyone's with SS so I'll give it a shot for the other guys, even though I'm not sure if they'd have a chance...and without current Magneto.
Yeah, SS can drain Hulk, but not instantaneously. Hulk's at least as powerful in brute strength as SS, probably more, so for a while he's not at a complete disadvantage. And SS won't just disband the molecules in Hulk...the molecular integrity of a creature that can take the kind of damage that the Hulk can has to be incredibly dense. If SS could just take apart any molecules, he'd be the most powerful person ever.
So while Hulk is occupying SS, Iceman focuses on slowing SS...SS is used to living in space, so cold isn't anything new, but freezing his blood, etc, would still slow him down a bit....forcing him to focus on fighting rather than light-speed attacks or other such things. Meanwhile, Mag's brings one big sheet of metal and lots of other smaller metal things. He wraps the big one around the Hulk's torso and starts whipping him at SS at unbelievable speeds...the speed plus Hulk's punching strength are starting to make SS a bit woozy. Mags jets around from one place to another to make it hard for SS to focus on both him and the Hulk.
Iceman continues slowing him as much as possible, and the Hulk/metal debris barrage eventually gets to SS and he falls over, beaten!
...or maybe the power cosmic is too much for the three of them. Not really sure. But at least I gave it a shot.