a true rockered ski is shaped more like a water ski. instead of camber, where if you lay the ski on the ground, the tip and tail touch, but not the middle, in rocker, the tip and tail are flared up while the middle is touching.
i believe the lord has minimal rocker in the forebody, basically an early rise in the tip, but not in the tail. this is becoming a popular idea, as it keeps the tips up in soft snow. most of the salomons don't have rocker in the tail or mid body, so are modifications of the rockered ski idea.
quick answer, but hope it helps.
the tgr website has quite a few good debates on the different variations of rocker, so if you want an education, you might search there.