I graduated from a university in Canada, and I have been focusing on applying to North American universities even though my GPA isnt the highest. I recently started searching for MSc programs in the UK, and I noticed that entry requirements are much easier. For example, for the course-based , we don't need to secure a supervisor yet students still work on a research project. Whereas when I tried applying to McGill university in Canada, I was told that not having a supervisor will not allow me admission to the program.
Why is admission to graduate school much lenient in the UK compared to the US/Canada? are schools in North America known to have the best reputation in research? why aren't many people going to study in the UK if things were that easy?
I'm interested in knowing the main differences between the UK and North American universities.