Just so you know, the ANT has the same lightweight core as the JP vs Julien, as does the ARG. The ARG is also cap to further reduce the weight. Its flex is supposedly similar to the ANT, so not exactly soft, but the ANT itself isn't the be all and end all of stiffness. Regardless, its a specific ski designed for a specifc purpose and it does that well.
BTW, when Salomon released the pocket rocket and sold gazillions did you go bash the rest of the industry for copying it? No. They just produced their versions of a good idea, its bound to happen. McConkey should be recognized for starting this idea, but it won't be long before most if not all companies have some sort of unconventional sidecut or reverse camber/rocker ski.