In my mind.
Earlier in this thread we discussed that the same size brake pads are used in both AZC systems. Thus the pad surface area remains the same. Yes the rotors are larger in the upgrade allowing a larger durable surface area, and ability to disapate heat. As far as the calipers, Wilwood's site says it best;
Staggered piston sizes distribute pressure to compensate for the natural variances in temperature, load, and wear rate that occur over the length of the pad. Pad life is extended and performance is measurably improved.
Frankly in my mind again. I see the extra money buying me extended life, heat dissipation, increased feel/control, and predictability. Sorry, I don't understand your point. But you have a right to your opinion.
Oh Yea, I like the looks too. That's my opinion.