The difference is in the reasoning for war, Bama.
Let me put this in perspective.
Say there's two alliances, A and B.
Alliance A spies on you, recruits from you, tries to convince your allies to attack you, and has been spying away your nukes for a month now.
Alliance B has done nothing at all.
Now, you go to war with both alliances, and both alliances hit peace mode en masse.
At this point, what do you do? Alliance A has wronged you, do you just pack up and go home without hurting them whatsoever simply because the opportunity is not there? How does that make any sense whatsoever? You're there to teach them a lesson, rightfully so. You shouldn't simply give up because the popular opinion says it's a "bad" thing to do.
Now with alliance B. The reason you want to hurt them is because you *want* to hurt them. And at this point, forcing them out of peace mode IS unjust.
The fact is, Bama. They deserve punishment, GATO did not.