You're making this generalization based on how the character looks on a movie poster. I think his portrayal in the movie itself would matter a whole lot more than his costume.
I mean, I doubt they could much get away with the look from the comics in the movie. Hell, the Thor movie and Avengers barely pulled off the giant horned Asgardian helmets and they've pretty much abandoned the idea of Thor's helmet.
Besides, this may very well not how he looks in the whole movie, it's just a single picture of him. It could be his bed clothes for all we know. If you're going to write off the movie based on a single characters, at least watch the movie first. Or see some scenes of the guy. But, nope, you see a movie poster with him on it and you throw it all away.