same difference

make a difference

To carry out an action, the result of which is a significant change, or an altered circumstance.

make all the difference

To be a crucial or deciding factor; to have a very significant effect (often a positive one).

split the difference

To choose an option or take a position roughly midway between two opposed alternatives; to compromise.

what's the difference

(rhetorical question) The difference does not matter; so what?

world of difference

A great or insurmountable difference.