You are right, that doesn't. But history won't remember that. History will consider the powerful and the victorious as right. There's no Karma checker.
its not about karma. what is right resonates.
I humbly disagree with you though. There are many instances where heinous acts by the powerful have gone unpunished. Many of them by the US and Britain. They have had no repercussions on the perpetrators because of power.