Board Thread:Questions and Answers/@comment-27758694-20170113163316/@comment-31016377-20170113170116

I guess one of the main reasons was the new PHY LSSJ Broly.. As he needs the same Medals for dokkaning than the STR Broly. Thus they added the Super Stage which drops 7 medals a time. You can now decide if you want to clear the Super stage 11 times or the much easier Z-Hard stage 77 times.. If you would only need 11 medals, you could clear the Z-Hard Stage 11 times and that's it.

For all the other God leads they just took the same number.. That's my guess ;-)