The job requirement makes all the difference. In Canada, the point based immigration system will reward anyone with a STEM degree with points, irrelevant of the actual market value of the degree. My friends in those market tell me it's not uncommon to have senior foreign graduates incapable of passing a fizzbuzz interview. They often have multi year gaps in their resume where they couldn't land a job upon arriving in Canada. Contrast this to the US where for an application to even get to the lottery it has to be vetted by a business that's willing to spend multiple thousands of dollars to maybe get a visa for the worker.

There's also a lot of workers that simply can't pass the bar due to the Requests For Evidences required by the US government. As an European from, what I assume, a legitimate university you wouldn't experience those issues. Most of the folks who fail at this step will have back-up petitions filled at one of the satellite locations in Canada.