That is not particularly far off from my own definition.
I seperate moral intent and moral outcome:
Moral intent - Any action that has the intent of increasing the happiness to suffering ratio in the world
Moral outcome - Any action which increases the happiness to suffering ratio cumulatively over an infinite amount of time (basically the indefinite integral)
Its just a very technical way of saying you put less suffering int he world.
To me peace is certainly an element that gets you there but is not the full picture when it comes to morality.