It could be as simple as you are used to your blade which may not be as sharp as the edge Phil puts on and you use too much pressure with the one Phil honed. I am sure that would happen to me too as I am now used to my edges and I can remember how sharp Phil's were, much sharper than mine. IIRC Phil told me that he uses a natural finisher but that was a couple of years ago and may have changed now. In any case he does put a very good edge on a blade.

Bob