Yes we see it pretty much every year, those extra years help, and most of those USports players would have been very good junior players before. I remember a time or two when a USports player was someone who had actually gone to Canada's camp a few years earlier. Canada did crack them early in the third but it is also good that the Canadian defence looked solid throughout.
As always it will be interesting to see how much these games matter to the coaches. Rehkopf was on the team last year, Sennecke was good in the summer camp, both have scored a ton in the OHL so far, and then they were the best forwards today. They should be on the team unless the management/coaches just are set on not having them.