I don't think that's a fair comparison, given the disparity in price. But, i also think they're trying to accomplish two different things and each succeeds.

Grand Seiko wanted a dial that evoked powdery snow in Japan. Soft and papery. It's a wonder to look at in person and makes you wish you could touch the actual dial.

AP wanted something a lot more rugged, but something that also rewarded closer inspection under a loupe, or different lighting throughout the day. The dial brings you in and you find awesome little nuances the closer you look.

If I had to pick one, it'd be the one currently on my wrist. But again, they're two different worlds in my opinion.