The match you shot Sunday is not representative of the USPSA classification system for a number of reasons. First, it's not a sanctioned match and they are not affiliated with USPSA. Second, if memory serves, everybody either shoots open or limited class at that match.
Show up to a sanctioned USPSA match, like the one coming up Sunday night at H&H. I'm sure you will see a difference in how the classification system REALLY works.
I am planning on being there, what is the normal round count for the H&H match?