Cos I don't think you can realistically have every media outlet canon.
My vote would be for the movies, and if possible movies + any televised series.. i think it's really bad for movies and tv series to be different canons.. i think 3rd priority should be the game..why?
because blizzard has shown that gameplay comes first, and that's terrible for a realistic story. remember the warcraft movie trailer, and the stormwind in it that looks so different from the game? if the game ends up being the highest cannon, then it's b/s cos then Azeroth ends up being way too small, the cities far too impractical not to mention tiny and the list goes on.. and then all those bad stories too?
nah, the game is best being a close approximation, for the real medium of the movies.. and opportunity to interactively engage with the universe and do cool fancy things you see in the movies, in a good or really great way.. but no more.
They should work hard at not messing up movie or tv medium, make the mistakes in the game where people are more interested in slaughtering enemies than whether it makes sense for Thrall to be everywhere or for the upteen number of questionable decisions.
EDIT: p.s. You have to post a cannon pic