the G-man wrote:
I don't know if it's a SAG thing as much as it is a contractual thing. Or it might just be "first bill the guy who supposedly puts asses in the seats."
I can't pretend to be an expert on SAG rules, but this doesn't sound like one of them. It's probably a contractual thing; Depp is a big star and no doubt his contract has language giving him both top billing and billing above the title.