優るとも劣らぬ

まさるともおとらぬ

not at all inferior to, rival or surpass, compare favorably (with)

優劣

ゆうれつ

(relative) merits, superiority or inferiority, quality

勝るとも劣らぬ

まさるともおとらぬ

not at all inferior to; compare favorably (with); being even better than; rivalling; surpassing

優勝劣敗

ゆうしょうれっぱい

survival of the fittest

優劣の法則

ゆうれつのほうそく

(Mendel's) law of dominance

劣る

おとる

to be inferior to, to be less good at, to fall behind

優劣つけがたい

ゆうれつつけがたい

it's hard to choose (because both are excellent)

ともすると

apt to (do), liable to, prone to

何ともない

なんともない

it's no big deal; it's no problem; it's nothing to worry about; safe (and sound); all right

心もとない

uneasy; unsure; anxious

とでもない

unthinkable, unexpected, outrageous, offensive

優れない

すぐれない

unwell; poor

いとも

extremely

優れもの

すぐれもの

exceptional item; extraordinary product

劣らず

おとらず

with the best of them, as the next fellow

いいとも

damn straight, no problem, sounds good, sure thing

ならともかく

ならともかく

it's different when... but, it's not so bad when... but

優れる

すぐれる

to surpass, to outstrip, to excel

劣

れつ

inferior