IMHO, "The Grey" was horrible...The people depicted were so inept at survival, it became an exercise in frustration and disgust watching it. Now, granted, that may actually be realistic in terms of people in general -- it just did not make for good cinema.
Spoiler alert.
That movie is what is great and terrible about hollywood. The story line I found to be fantastic and so was the acting. Then, they had to spoil it by the need that hollywood has to jazz everything up. Spoiling it with an unrealistic portrayal of wolves. The fact that the characters new nothing of survival made it more realistic to me. People that study survival stuff are in the teeny tiny minority.