► 名詞優劣 [(1)ゆうれつ]
meaning: different rank: 3☆
両者は優劣つけ
難い ⇨ You cannot really say which one is better than the other between those two
(☛ Literally “superior inferior”. Difference in quality)More examples:- 何を基準に優劣を判断しているのかはっきりしない ⇨ It is not clear what criteria are used to judge what is better