Doesn't matter if there's a curve. Your grades are still only meaningful compared to your classmates. (ok, assuming you're not in danger of actually failing the class)
The only time you care about your classmate's grade is when it is being graded on a curve. I couldn't care less about other people's grades.
The only time I cared about classmates' grades is when there was a curve. Adjusting a 92 to be the threshold for a 4.0 is a curve BTW. A lot of schools dont do this.
No they're not. They have nothing to do with your classmates. It's not a competition.