Because this is a MOS sequel and/or a Batman reboot? Surely you can see the difference between a high profile sequel and a high profile cross over(very rare) event. For example, as modest as Spidey and Wolverine box office are these days. If next year saw a crossover between the two...it wouldn't yield an 'average of such and such/such and such sequel'. It would be a high profile crossover between two of the biggest characters in comics/cinema today. In short, I don't think you are looking at it right. If the Xmen showed up in the Hobbit...cross over event. That being said there is no accounting for a wolverine reboot in that scenario, and this is def a new batman. All I can say is Bale did little to own his role as Jackman has(unlike bat's there has only ever been Hugh). Moreover Ben seems like a more bankable box office persona than Bale imo.