Yes, at his peak he blew Brodeur away. Brodeur had more longevity in the NHL because Hasek was older when he came over.
Hasek was as far ahead of other goalies at his peak as Gretzky was ahead of other forwards.
If Hasek was Canadian, he would be up there with Gretzky, Howe, and Orr in how people talk about them like it is unanimous that they are in a certain special GOAT tier.
I am not saying that it is active xenophobia, it's just marketing. Canadian players are more popular in Canada, and the history of the league has been viewed more through a Canadian retrospective by fans because it's only when Bettman took over that the league started making inroads expanding the footprint of the game across the US (with the exception of the Northeast). The league also has only been an international league for a few decades and prior to that it was mainly Canadians and some Americans. So in terms of where players rank in history, I think Canadians in the past have commanded a higher level of interest, which results in guys like Hasek being underrated compared to the more marketable players like Roy and Brodeur.