Incorrect. I would argue that while one's motivations are a factor in the ethics of an action, only the result of the action truly matters. You're dealing with a real sensitive area concerning the ethics of escalation of force, especially when there's an unknown quantity in the equation.

At the point where Apocalypse was brought down, none of us knew exactly how much he could withstand or how much of a threat he still was. Given the previous displays of power, I would make the argument that it served the greater good to err on the side of excessive force.

There is a difference between celebrating victory and celebrating the methods used. To revel in saving the day is an acceptable act. It's a celebration of life and a reaffirmation of a just cause. To revel in the violence, that is abhorrent.

I think everyone, in the end, has to answer to their own conscience for their actions and the methods used to what amounted to a noble end.