As excessive as 12 stabs may seem, we didn't watch the fight. I also fail to see why self-defense isn't self-defense unless there is a high likelihood of death. Are people expected to just let others beat them up because they aren't going to die? Bodily harm is bodily harm, regardless of whether you will survive. Unless facts are being misrepresented, I find it unlikely that Dylan didn't see the knife. It sounds like he continued to fight after seeing the knife.