Just curious on what grounds you make the claim? Do you find it unusual that the most populous area in the country has the strongest league and develops the strongest players? Is that not reasonable? Soccer in the GTA is ultra-competitive with clubs and individuals who amp each other up above and beyond what you see in most areas in Canada. There are U8 teams who play 7 days a week and U11 teams that can drop $1000 in field time in a weekend without a dent in their budget. I'm not sure that the long-term adult performance ratio and metrics are linear, but at the younger ages they certainly are a level above in terms of commitment and intensity. And that comes from someone outside the GTA.Similarly, BR using Ontarians because he knows them
Ontario dominated national All-Stars at girls U14 and U16 with both teams going undefeated. The U14s goals were 15-1 and the U16s were 13-0. Each team won as many games as every other team in their five-group A pool combined.
No one will ever know for sure, but it is at least highly likely that the best players were on the field.