"Of course Canada has historically done a much better job of integrating other cultures."

Actually, no, what Canada has done is to have an immigration policy that carefully selects for well educated immigrants, such as engineers and doctors and professors and scientists.

Very well educated adults tend to have smart children and strongly value education, and people with high intelligence tend to be organized and are far less likely to use violence to solve problems, or to get involved in crime.

So your comparison is unscientific. You pretend the substrate is the same in recent decades, of folks arriving in France and Germany and folks arriving in Canada. The substrates are totally different, as those governments have not been screening the entrances the way we have.

Indeed, the group academically akin to those arrivals in Europe are the fruit and farm workers Canada takes in using temporary worker visas, and Canada kicks those people back south once the picking season is over...