Board Thread:4. General Discussion/@comment-124.83.16.225-20160129101113/@comment-124.83.16.225-20160208124744

Ah, here we go. Finally came across the line again, on day 324:

" まあ、【魔帝】は【英雄】のように配下の数が多い方が強いし、逆に【獣王】は【勇者】のように少数精鋭の方が強い. "

Which straight up says that the Devil Emperor and Champions are strong from having a great number of subordinates (whatever form that may take; for the Hail Champion, her subordinates would be the clouds themselves; made a mistake earlier and called her the Cloud Eiyuu, but that's a different guy who's actually a Hero and not a Champion) while the Beast King and Heroes are strong as individuals in comparison. There were also some lines in the previous days talking about how Legendary Heroes strengthen at a quicker rate than normal people, but Rou specifically talks about how Heroes, specifically, have an early rate of growth.