how to know the usage of として


Hi I was wondering how として was used in this sentence. I already know it can be
used as: `as, even, apart from`, but I'm having trouble figuring out the
differences in some sentences .

> たとえ 君が 痛みに慣れているのだとしてもだ




> たとえ 君が 痛みに慣れているのだとしてもだ

Here it means something like "even supposing". "Even supposing you are used to
pain ..."

Sounds like something from some comic or something.

