The Ghost looks similar to a roc side-by-side but doesn't fly like much like the DX Roc i have from a couple years ago (when compared to my Gravity Ghosts).
There are SO many different flights you can get out of a Ghost, depending on the plastic you get Excel, Gravity, Protege, Icon, Pinnacle, Legend, they each have their own differences, some start out beefy, more glide, better grip, break in fast/slower, etc.
I Throw 2 Icon, 2 Gravity, and 1 beefy early run pinnacle. In different stages of wear that covers every spectrum of stability and nearly every shot i could need to make for midrange drives, similar to how well Rocs can be cycled and vary from champ/DX/etc.
The 8x mold thing was started to generate hype and make people say "Wow that sounds great, i need to get one", etc. I have never heard Legacy claim its any kind of Roc.