[Captain Bunny]

Erm if you want to see real life injuries, become a doctor or join the army. At the end of the day it was a movie, and the main reason for (most) movies is to make money. If they showed injuries as bad as real life, the film would not have a 15 rating, would be viewed by a smaller audience, and as such, not make as much money.
dont get me wrong, it would have been a bit more realistic if they tried to make things more gory, but that wouldnt appeal to much to the BBFC, and the US equivilent of cencorship.