―にしては for; considering ¶7 月にしては涼しい.　 It is cool for July. /あの人は 80 歳にしては記憶力がいい.　 He has a good memory for a man eighty years old.

―にしても <―しても> ¶それが事実にしても　 (even) granting [supposing] that it is true; (even) granting [supposing] it to be true ‖決着がつくにしても急にはむりだ.　 Even granting that a settlement will be reached, it won't happen quickly. /その金は全部でないにしても半分以上は使ってしまった.　 Though he hasn't used up all the money, he has spent more than half of it.