We have used that scoring system for 20 years or so and, (in my estimation), it is far superior. In fact no Canadians have gone to the USA matches around here, because of it. It is really dishearting to travel 2 hours and shoot a 9 on your first target. At least, with the 11 point system, you can dig in and shoot your butt off and win. Interest short story, 1 USA range decided to use the 11 point system, they were getting 6 to 8 shooters before with the 10 X system. Went to 18 shooters with the 11 point system until it was changed because that was not the way it should be, even though none of the matches where registered. They are now back to 6 to 8 shooters. OH WELL!!!!!
I guess the EGO of 2 is superior to the fun of 18.