You're trying to compare a Salomon All-Mountain ski to Filthy Richs when both are to be used as a park ski....that's not even fair...
Salomon Rocker 92 (formerly know as the 2012) was always marketed as an "all-mountain park ski", it has rocker-camber-rocker and it's directional (non-symmetrical), it's pretty soft, it'll work fine in and out of the park...but it's not a dedicated ski, so it's one of those things where it's OK at everything, but not great at one thing.
ON3P Filthy Rich is a dedicated park ski, does that mean it can't ski on other trails...of course not, what that means is that it excels in the park more than anywhere else. It also has rocker-camber-rocker, but it has more rocker than the Rocker 92, and also has more camber (the camber on the Rocker 92 is pretty flat), it's medium stiff.
The MAJOR difference you'll find is that the FRs are going to be WAY more durable than the Rocker 92 in the park. Remember, the FR is designed to be used in the park, and the guys at ON3P realize that means bashing them into rails so they put the thickest, strongest edges they could find on them. So, it comes down to, do you want a ski that will maybe make it one season in the park (if that) cause it's cheaper or a ski that's a bit more expensive but will last you much longer (mine can easily go a second season, and I don't normally have skis that last me though 1...I used to need 2 pairs of park skis per season).