how did you test it though? 
eta: I would say it might matter on what your crush was like to begin with. I certainly do not mill to a fine powder. maybe you are looking to close the gap on your mill b/c you are doing no sparge beer? I guess I would be interested to hear what your grist is like with and without the conditioning.
Not scientific in any way. But I wasn't trying to change the way people make beer, just trying to solve an obvious problem in my own brewery. Of course, that doesn't stop me from recommending it as a possible way to reduce tannin. 
I crush pretty fine, not crazy fine, though, I don't think. However, I also need to store my grain with desiccant, or it rots. Rehydrating the husks makes a visually dramatic difference in the quality of the husks that it might not make if you store your grain at high humidity.