Scoring generally follows rules set by IDPA, USPSA, and other shooting sports.
This competition could turn out to be a very interesting one. The challenge is to be able to use all kinds of firearms and the winning competitior should be someone who has all-around experience.
Some years ago, one of cable TV shooting show did a similar competition and winner was Jeery Miculek. This time it is hard to tell, but Taran Butler might give Jerry a hard time.