fujas are softer. so they should flex more and tip dive less. but the rocker on the ski doesn't mean the tips will never dive...you just have to learn to ride pow differently....focus hard on liek balancing centered, not trying to pressure your tips at all.
in my opinion, you should mount skis where they were designed to be skied. ever ride a centermounted park ski that was meant to be backmounted? suuuucks. core and true are the same by the way, first thing i did when i got them was flip them and compare.