I love Blizzard but I honestly think the WoW movie will be a critical flop, big time.
I'm unsure on profitability, a lot of people will go and see it just because it's WoW, but at the same time it will get critically panned and have the stigma of WoW and failed video game movies attached that might affect the viewer numbers leading to both a critical and financial bomb.
Also this actor sucks, my opinion.
Edit: If this was a three or four years ago, I think it would be a different story, at least on the profit side, I'd imagine critics would still be the same.