Bonanza-
Dunno the specifics of either competition. Sounds very interesting!!

Still I would think any simple stopping power management testing for should have as the primary endpoint the power of multiple shots(minimum of 2) delivered over time. One shot testing desn't deal with the scenario of multi round rifles or repeat shots with a DG charge.One could multiply the energy/shot on target times the time. The lower the numerical result--the better.If 5000 ft pounds energy/shot is desired as a minimum energy rifle to shoot--fine. If I can only place 2 shots from a 450/400(4000 ftpnds energy) in less than 2 seconds, then maybe I shouldn't take the 470NE "stopper" to Africa---If I can do it with a 500NE(5700 ftpnds) then great!!

At least one could try to determine personal limits and improve those limits over time.

Empty chlorine buckets for swimming pools filled with bags of water looks like fun to play with!!