Replying to Zero camber park skis

I've been looking into getting some new park skis, and I've come across a few that have rockered tips and tails and zero camber underfoot (cough cough K2 cough). I understand the advantages of rocker in the park: easier buttering, easier turn initiation, less danger of edge catching, etcetera. But what I'm wondering is: what advantage does zero camber present? As I understand (and from my experience) camber provides pop, helps cushion hard landings a bit, and makes a ski carve hard. I'm sure there indeed are advantages to flat camber, otherwise these companies wouldn't be making these skis. So can someone fill me in on said advantages?