Brickguy,
technically every polish has grit in it or it wouldn't polish and shine your ball. The question is how much and how aggressive is the grit.
As far as I know, Powerhouse Factory Finish is equivalent to Lanemasters Factory Finish and to Snake oil in that they affect the underlying grit level very little.
As far as the original poster is concerned,many other factors can affect his friend's having more backend on his balls starting with his release, rev rate, tilt, rotation, and ball speed, then the finish and the drilling on his balls. To say that the polish is the only difference is dangerously ignoring so many other potential factors.
"None are so blind as those who will not see."