I think I am going to have to disagree with you at least a little here. Too much description can kill a fight scene stone dead, especially when written from the POV of the main protagonist. A good fight scene needs a sense of rapidity far more than it needs accurate descriptions. It is also necessary to capture the protagonist's 'voice' in these scenes, which does not always make for perfect English, regardless of the talent (Or otherwise) of the writer.
Also, GlanceALot states this is PART of a story, not the whole of it, so the lead in and lead out sentences don't have to make enormous sense, as they probably work far better in the context of the whole piece.
Lastly, if something bites down hard on mithril armour, some tooth damage is quite reasonable speculation on the part of the protagonist. None of us think in facts all the time, after all <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
Ah, differences of opinion! Don't ya love 'em? <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />