I saw those and it got me wondering if they were philosophically "sincere." I agree they look overdone. I am not sure if those by CC look better, or just look better at Sand Hills because of the setting where they do and could exist naturally. The San Antonio site is fairly rugged, but the overall presentation is one of an overly finished course, so the edges don't really look quite right there.
Certainly, if the pro tour is concerned with "proportional punishment" (which I presume they are) a ball landing at the top of the bunker has a greater chance of a funky lie than one landing at the bottom of the bunker. I would think Tour pros would want the opposite, but maybe the sand is firm enough that there are no plugs, etc.
In general, on that course or most, I think a smoother edge would work better visually, providing those capes and bays varied a lot. Many bunkers look sterile because each cape and bay are similar sizes, probably for maintenance. A smooth edge, but with different sized, shaped and angled (most important!) lobes looks best, IMHO and is what makes Mac bunkers look better than other copies.
In fact, it struck me that each of those little notches that gave those bunkers the lacy edge, was, in fact, way to similar, lending to the artifical look.
BTW, I was struck by the fact that on one green Sergio was stopped short of the green by a swale and small mound just in front of the pin (sound off in clubhouse after round, so I don't recall which one) To be honest, I don't see where those bunkers (or maybe any bunkers on any course) are really the strategy for the pros anymore.