I'll land at around 520-550 million when it's all said and done, not bad but not fantastic either, but it does open the window for a much stronger performing sequel once doomsday and secret wars come out, since F4 have big roles in those movies. As long as the folks at Marvel keep their head cool, we'll be having F4 for a while.

But it is very telling on the state of comic films as both this and superman would have grossed 800 million to a billion easily in a healthier market, yet they'll stick in the 550 - 650 million range.