Go watch the Superman making-of featurette. Henry Cavill, the actor playing Superman, is English. I know you know this, but still, it's wonderfully unnerving to hear him talk. He went to a boarding school in Buckinghamshire. He did prep. Superman was nurtured not on an alien planet, but in the Home Counties.
Anticipation for Andrew Garfield's The Amazing Spider-Man is tepid, at best. No one's talking about it, it doesn't generate nearly as much hushed excitement as the impending Bat-fest or last month's Promethe-mess (sic).
Whether or not it is too soon to reboot to the Spider-man series just five years after Sam Raimi went out with a whimper in the wake of 2007's wearily disappointing Spider-Man 3, box office allure and fans' desire to see a post-Nolan web slinger have resulted in an early return for Marvel's most famous franchise.