Curve grading is such a messed up thing. It leads to professors assuming you should get all A's in all of your classes basically, cuz of this nonsense from US unis.
I did an exchange year, and sent my grades over to a professor. Guy was like "What's up with all the non As" and I had to talk about how we do things differently here (giving points for right answers, and then adding them all up).
Of course there's always an overall curving happening on a high level because teachers choose how hard to make assignments or not, and ultimately grades are not really fundamentally important, but when people just have those to judge you on and choose to, it really fucks things up.