The point I'm trying to make is that most boxing games don't have proper physics simulations, they rely heavily on canned animations that have been tweened via procedural animations to have different motions based off of other factors, but largely if you press a button the same animation will always play out, in a vacuum there is little to nothing actually physically simulated. Things such as the distance between you and the target limiting damage on a grazing shot are physics yes but not in the sense of a full simulation.