even if; even supposing that
Used after a clause, often in the form 〜たとしても or 〜としても, to introduce a hypothetical condition that would not change the main result.
Even if it rains, the game will be held.
also as; also for; from the position of
Used after a noun or pronoun as Nとしても, meaning 'also as N' or 'from N's side/standpoint too.' With pronouns such as 私としても, it often means 'for my part too.'
She is also famous as a translator.
Even if we leave now, we probably won't make it in time.
For my part too, I would like to cooperate as much as possible.
ても is the general 'even if/though' connective attached directly to verbs and adjectives, whereas としても is used after a clause or noun to mean 'even supposing that' or 'also as.'
にしても also means 'even if/even as' but attaches differently and often carries a more evaluative or critical tone than としても.
としても expresses 'even if/even as' in a slightly more neutral, written register, while ところで carries a stronger nuance of futility about the outcome.
A grammatical expression built from として, related to とする 'to regard as; to suppose,' plus も 'also; even.' The combination has developed the two main uses 'even supposing that' and 'also as/from the standpoint of.'