So while I'm in the mode of asking entertainingly stupid questions....
Let's assume that the Canadians (or team "X") have the teaching system that develops the "best" skiers. Aside from the difficulty on agreeing on what constitutes "best", what does being the "best" skier do for someone? With respect to comparing a US demo team member to a Canadian demo team member, it doesn't mean skiing more of the mountain (they both ski all mountain), skiing more hours per day or days per year (they both get >150 days), winning more races (they both chose to teach vs race), teaching more lessons (at this level who has a shortage?), having more fun (the difference is minimal) or having more people tell them what great skiers they are (I've yet to meet a demo team member who wouldn't rather have "You're a great skier" come out of their mouth vs go into their ears).
There's more to skiing than being the best. Recreational skiing is not a competition. Even in competitive skiing, does the racer with the best technique always win? What about the roles of fitness, gear selection, ski prep, coaching and teamwork? If competitive skiing has all of those extra elements, what are the extra elements that are important to recreational skiing? Why doesn't everyone use high flouro race wax? How much better would our student's ski if we just waxed their skis instead of teaching them how to ski? You know, someone could spend an entire week asking and answering these kinds of questions.
It's always a thrill to see great skiers in action. With any luck, the visual imagery alone will help to improve our own technique. For instructor's the practice in analyzing this level of technique is invaluable. Beyond that, if looking at these videos makes you believe that one nation's ski teaching system is better than another's, then by all means either take pride in that fact, take your business there or adopt their methods. If you believe that the purpose of Interski is to be a symposium about ski instruction (like their web site claims), then you'll understand that the skiing (and riding and tele'ing) is just one piece of what Interski is all about.