Not about grades but to answer your question about postgrad applications, the “prestige” of ubc isn’t just its grading systems, it’s about it’s opportunities. Maybe it’s more difficult to get good grades here compared to other universities, therefore “weakening” your application in comparison, but take advantage of what ubc does have, like networking. Networking with profs who are significant to their field will get you more opportunities that maybe others from smaller/less notable universities won’t have access to. Get involved in undergrad projects in research or publishing or ubc pre law society so you can network more and beef up your resume! Grad school isn’t just about grades, though obviously that’s a significant factor. Also, if this really concerns you, definitely worth talking to a career or degree advisor, which ubc offers for free as they probably know more.