Yukina has only been the 4* in one non-Roselia only set (Girls Band Life 1), but there have only been two Roselia only sets in which Yukina wasn't the 4* (Elegant Rose & NFO). ironically, both of them feature a Rinko 4*. what do we learn from this?

it's that Rinko is the most powerful member of Roselia, as the only one who can overthrow Yukina's reign, and therefore the Encore Performance gacha is, by definition, the most powerful Roselia gacha. I rest my case