Some extra context for the Magneto feat:
Q. 1) I'm a little bit confused. Magneto can't keep Utopia floating, yet he can allegedly grab a massive bullet light years away that gets more dense as it flies through the depths of space. This is a bullet that has been travelling in space since before 'Messiah CompleX,' which was almost two years ago. Reed Richards and Tony Stark couldn't figure out a solution, but this option was available? It seems...sketchy.
A. Well, I think you've misread the book a little bit and you're making some presumptions; let me see if I can get your suspension of disbelief back on track some. As was stated in the scene with the X-club, he could, theoretically, keep it floating, but only if that's all he does all the time. The power drain is constant and to counter it, he'd have to constantly be recharging the batteries, as it were. But he needs to eat, sleep, and do something that isn't just crank his power to ten 24-7. So it's not a can't, it's more of a shouldn't, or couldn't for very long. It'd be fruitless and ultimately just exhaust him.
And Magneto knew where the bullet was; he'd seen it; he knew where to look. And the power-rebooting process he underwent in space augmented him with a depth of ability he'd lacked for a long time. That it happened close to where Kitty passed, that his magnetic awareness, as it were, was revitalized close to her...I mean, that might have had something to do with it.
Mags had it all over Reed and Tony in this case; but if you don't buy that the old man (who used to be an even older man but then wasn't and was good, then evil, then good, then dead, then alive, then dead, then alive but in space and can control magnetism) can bring back a giant, airless, foodless and waterless (Seriously! I should've asked Joss when I had him on the phone - WHAT HAS KITTY BEEN EATING!?!) hollow ghost bullet containing a ghostly girl from deep space, but the man who can stretch his body like silly putty (that got his powers by stealing a rocket and going into near-earth orbit with his college buddy, girlfriend, and her brother) and the billionaire with the billion dollar suit of armor (that used to have transistors and magnets in his chest after stepping on a Vietcong landmine, was then a teenager, then an adult, then infused with a living techbridge that tied him to his armor, then erased his entire brain) couldn't find her...well, when you put it like that, it's a fair cop. Admittedly, when the issue is framed in those terms, I have trouble buying it too.
In all seriousness, though, you're assuming that Magneto is going to hop up and skip and dance if he successfully brings Kitty home. There's no value in what Magneto's doing if it isn't a sacrifice for him to do. If it was easy, it'd be an empty gesture. This is not easy. This comes with a price. Keep reading.
http://www.comicbookresources.com/?page=article&id=24962