Possible lore explanations for Doomfist's Power Block?

Initially I thought this ability was rather uncreative, as if Blizz couldn’t really think of another tank ability to give Doomfist. But thinking about it more, I can see how it makes sense that Doomfist’s Gauntlet can do this. The Gauntlet is suppose to be somewhat of a legendary weapon, so it makes sense that it has more functionality to it than just punching things.

Perhaps the way Power Block works is that it converts kinetic energy into potential energy (which is a fancy way of saying “stored energy”).

Any thoughts?