Re Kabar. Short version is blade shape and ergonomics. Survival/bushcraft knives really need to have a spearpoint. Versitility is very much a consideration. Clip pointed blades are far less versatile. Modern shaped low slip handles are far safer to grip and are markedly less tiring to use over an extended period of time. Having said that if I needed a knife to use as a spear, against large animals such as lion, a Kabar ain't a bad choice. One other point:- in many jurisdiction's it is not legal to carry and in some cases possess a mil-spec knife. A Kabar is very definatly mil-spec.
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I don't do dumb & helpless.