That's really difficult to say as I don't know the individual markets current strengths, I rather know that overall Overseas - China is still healthy (as shown by IW).
I think that Avatar 2 will run at a +20% performance compared to Avatar relative to each individual market size. (we're talking $4b ww here atleast)
It's going to have a GIANT December then burn on until May, I'm expecting something really really ridiculous.