[hmmmmmm111]

This is a misconception.

In western Europe and Asia all college education is more rigorous than American college.

And yet I don’t have the overall impression that the international bachelor’s people I know got something correlated out of the difference in rigor. It would be as obvious as the difference in rigor itself. It’s not.

[s1artibartfast]

The rigor drives the signal. Biggest one is rigor of acceptance screening. It is about measuring and screening students, not educating them.