no less … than
彼女は賢明だが、君も劣らぬくらい賢明だ。
She is wise, but you are just as wise.
彼女は兄に勝るとも劣らぬくらい英語が上手だ。
She is every bit as good at English as her older brother.
彼は他の誰にも劣らぬくらい一生懸命働いた。
He worked as hard as anyone else.
彼女は英語を話すのが得意で、兄に勝るとも劣らぬくらいだ。
She's good at speaking English—every bit as good as her older brother.