I don't think so. Just too many WoW players (current and former) around the world who want to see it. No expensive actors will help to have a not too high budget (but probably still very high).
It will have probably no legs since most fans will see it first weekend but with the release in China it will probably make enough money. It will be huge there I guess.
Well, I may be wrong but I think it will be profitable.
The budget on the Movie alone was $160 million, thats not even including the advertisement.