How are these equivalent? Yes, if you've started a pointless unjust war that you can't win, the right thing to do is say mea culpa, accept whatever fees the other party charges and fuck off forever. Not try your best to start WWIII just because, hell, we already killed 3000 civilians, might as well try to beat our high score from Iraq, right?
Trump is not Che Guevara. The US doesn't send troops at great personal danger to themselves to help oppressed revolutionaries. They back fascist dictatorships and launch drone strikes. They murdered 120 children on day one in Iran. Buying the party line here is absurd.
If only we lived in the reality where this was possible. Americans living in the same fear they inflict on the rest of the world might mellow them out a little.