I know this has already been published but we need an answer. Every category has emulator, and the cups for some reason they dont have emulator option. Its kind of dumb. I dont know why it would be a problem, because its already done in 100% and others

It's mostly because it would be such an incomplete leaderboard that it's not worth tracking for us. Even the N64 cup categories are really just there for tracking WR history since people typically don't go an extract the cup times from their full game runs. Cup runs take significantly more moderation work too. Because of the fact that a lot of submissions are from full game runs, mods have to more carefully retime the runs. Of course, you can play the category without the leaderboard too if you really want to play cup runs.