にしては
〈前置詞相当〉For; considering
◆女にしては偉い She is brave for a woman―considering her sex.
◆彼は洋行もしないにしては英語がうまい He speaks English well for a man who has never been abroad.
◆年にしては丈夫だ He is strong for his age―considering his age.
◆この手紙は子どもが書いたにしてはよく書いてある The letter is well written,considering that it was done by a child.
にしても
〈接続詞〉Even if; though; granting; and yet
◆彼は洋行したにしても長くはいない Even if he went abroad, he did not stay long.
◆それは本当にしても僕には関係の無いことだ Though it may be true, it does not concern me.
◆彼は酒に酔っていたにしてもあんなことをしては言い訳が立たぬ Granting that he was drunk, that is no excuse for his behaviour.
◆それにしてもおかしい And yet it is strange.