I think it's reasonable to discuss how useful this ship would be in battle. We have seen in Star Trek how small ships are able to defeat larger ships, i.e. the Defiant against the Lakota
Didn't the Lakota
almost destroy the Defiant
in their fight.
It was a stalemate for both ships, but that's in another life.
The Vengeance staring down the Enterprise is a classic example of a david v goliath in space, you're never going to get a small antagonist shuttle craft sized ship to dramatically work no matter how much trek tech babble is thrown into it.