Atomization is the first step to vaporization. You want the fuel vaporized in the chamber.
And that’s the bulls balls of the whole thing. How does the tuner or end user get to full vaporization or at least as good as it can be within the rules or whatever limits we have to deal with.
If you want to run 190 plus coolant temperatures, a heated intake manifold and the required lower compression to do all that then for the most part the heat is doing the work for you.
If you want to run more compression you lower the coolant temperatures (lose some vaporization), a cold air intake (or worse yet a tunnel ram) and you lose more vaporization.
That means you have to look at what booster you can use to help with better atomization to get to better vaporization and the burr finish helps with that.