1. Warcraft is one of the biggest game franchises in the history of video games.
2. There's a fantasy drought on the big screen, and people LOVE fantasy.
3. Nerd-stuff is all the rage.
4. Believe it or not, but the mainstream audience loves CGI, big wars and fantastical environments.
5. Travis Fimmel (Anduin Lothar) can probably pull a decent audience.
6. Blockbuster season.
7. The trailer has 33m views, and I can't find a single film with more than 20m trailer views that made less than $400m. It sounds dumb but there definitely is a trailer-views-to-box-office-success-pattern post 2012. If not, find me enough evidence to refute this pattrn.
And the most important point.
8. John fucking Carter made $284,139,100 WITHOUT the help of China. John Carter, let that sink in. Warcraft is much bigger and will make between $350-500m in that very same audience excluding China. Now, it may not come as a surprise but Warcraft is HUGE in China and Daniel Wu (Gul'Dan) is even bigger. If Furious 7 made $400m in China alone, we can expect a Chinese box office figure of anywhere between $300-450m dollars, especially now that Wanda Group bought Legendary and are pushing Warcraft onto the Chinese market.
One example isn't enough, I guess. Prince of Persia, another video game adaptation, broke $300m without China's help, and yet again, Warcraft is bigger than either of those films.
See the numbers? The minimum we can expect is $600m and if the film turns out to be surprisingly good I'd say we're looking at $800m. A more realistic expectation is $700m dollars worldwide. My guess is it won't do well domestically but will prevail in the Chinese and European box office.
Now, feel free to refute my predictions, but you'll only prove my point if you spout shit like "It'll be the biggest flop of the year" without telling me exactly why.
I'm confident in these numbers.