I wanted to get a GCN Japanese ISO of Pikmin for Nintendont on my wii and would at least use it to practice but would my times be accepted onto the leaderboards?

Loading times are significantly faster on iso so it shouldn't be allowed. Wait for a moderator confirmation though

Since loading times are faster, generally at the top level it is not accepted. I will accept emulator times of 1:15:00 and above with proof, in special cases maybe lower. However, if you end up getting good enough I'd recommend getting a console version anyway. Piepusher has told me that we generally accept emulator runs, but I think there should be an upper limit where players should upgrade to console running.

Very understandable! Thank you for answering!