It couldn't happen to a more deserving act of vengeance.
What exactly are you saying?
For example, if your boss is very rude and disparaging, but then he gets fired, you would say, sarcastically, "It couldn't have happened to a nicer guy", implying there's some element of karma at work.
By analogy, GP is saying these tarrifs were an undeserving act of vengeance. I assume "undeserved" in the sense that it wasn't deserved by those on the receiving end.
You say the same thing when a complete moron fails to win the same prize.
Equal fairness to all ;)
Thank you. :)