I only wear a white tunic and have been shot by a crossbow bolt in the chest and survived. Granted, I have 3 points in iron flesh (because this is my first character so I wasn't really thinking) but I doubt it contributed to my survival considering I only lost about 60% of my health. The poor guy tried to run away but I'm an archer with a khergit bow, he couldn't get far D=. Really the only way I die from crossbows is from headshots, and I'm supposed to be squishy. I don't think it's right.