Yes, each genre is looked at differently. And each genre is reviewed differently. But, each film has the same level of weight and gravitas.
This is really the problem when it comes to films these days... maybe it does come from the audience, I don't know... but I'm of the Nolan, Whedon, Mendes, etc. camp of looking at the blockbuster genre and saying "why can't these be top notch films as well that are better than films of other genres?" A film, after all is said and done, is still a film. Looking at it any other way is absolutely wrong in my eyes, and I'm saying that from a writer's point of view. I would approach any genre the exact same way without saying "oh, scale back it's only a --- kind of film." That's just an excuse in my eyes. Every film should be approached with the same level of gravitas. It's the difference between 'Die Another Day' and 'Skyfall' for example or 'Batman Forever' against Nolan's Batman films. One said hold back - it's just this "a Bond film with zany gadgets" or "a superhero film which are for kids"; the other begged the question "why can't it be just as powerful if not more so?"
Having worked in the industry, I can tell you I'd be fired the next day if I went to them with an action and drama script where the action script was better written and had all the elements that a good action script has while the drama script has a lot of elements of its genre but isn't written nearly as well (but close) and say "this drama script is the better script because it's drama." Are films seen based on their genre? Yes. Is that the only component? No. As someone who had to be a critic - within a top studio - there are certain things from ALL films that you EQUALLY look for. They ARE on the same grounds and it is part of one's job to look at them as being on the same ground. To those who may say script and screen is different - only aesthetic additions are made which further puts them on equal ground. Which is harder to make believable - the unbelievable or the mundane? And sometimes yes the action film is the better made film from the dramatic film.
NOW... if you are looking at Oscar only liking dramas... well, how did Raiders and Babe get nominated then among numerous others?
I present Raiders of the Lost Ark. Sometimes simplicity, and simplicity done well is one of the hardest things to pull off.
How many good dramas are there? How many good simple films are there?