As was explained innumerable times, one does not have to sustain life threatening injuries to be convinced that severe injury is imminent. Allowing that to happen is not part of any self defense law of which I am aware. If this were relevant, then the MMA fighting techniques that TM learned were also relevant. I was under the impression that the weight difference at the time of the fight was less than that? There was certainly a distinctive height advantage. Which is huge when a taller person is on a top of a shorter one I agree This is a hypothetical problem that does not seem to often happen?