I really don't have high hopes for this OS. But base on TFA's performance, I think this one will at least do well in South America. Probably poorly in European markets. Asian markets I'm not sure about, but I noticed Cap has gained lots of Chinese, SK, and other Asian fans since The Avengers, so the potential is there.
The competitions with Rio 2 and TASM2 that came out just 2 weeks after (?) will be its disadvantages though.
For now, I say 280M.