It's not because he's black, it's because he doesn't look like a marvel villian and I'm unsure if he can act the part. Electro is a pyschotic guy (at least in the ultimate spiderman comics) iunno if Jamie can do it well
Dying of laughter. Its clearly just a black guy.
I mean, if it was a role that would force him to give up other roles, he'd lose out on money. The intro to the interview states a slice of all the things he's going to be in/start doing in the near future.