Death penalty compromise?

Here's a new one, at least to an American reader. A three-judge bench of the Supreme Court of Pakistan has ordered the federation attorney general to file a response in a case seeking to set aside field general court-martial death sentences on the ground that the victims' heirs had reached a civil settlement with the families of the two convicted men. The men were convicted of murdering fellow soldiers. Their convictions had previously been upheld.

For summaries of compounding/compromise in criminal cases in Pakistan click here and here.

If a state permits compounding of felonies that are tried in its civilian courts, should a different rule apply to cases tried in courts-martial?