The Qunari are described as such in the Dragon Age lore, Sten in Dragon Age: Origins was one of the rare exceptions to the race as a whole. Also, the Qunari in Dragon Age: Origins were basically just humans with a different religion and an all-encompassing stoic attitude.
Personally, I prefer the hulking, horned and battle painted Qunari in Dragon Age 2 much more. They actually seem intimidating, rather than just an excessively large human with bronzed skin standing before you with a look that could even make grass look more intimidating.
Although I will fully admit here and now, they should have stuck with the Dragon Age: Origins designs for the Darkspawn. That is really the only monster design I disliked out of them all, during my playthrough.