most things are the same for the Acekard RPG, even so, there still aint a lot of skins "out there" for it.
and what do you mean by programs? there isn't anything out there different as far as cards go for homebrew and the like.
I personally like the Acekard2 (if i can keep one without the "Fat Error"), but i also own an Acekard RPG.
The RPG costs quite a bit more then more popular cards (M3/R4, Edge/Cyclo) as far as the skins are concerned... So naturally there are more owners of those then the AK2 or AK RPG... Not to mention the fact of the bad QC run on the Acekard2, so i imagine a lot are a little leary about bying them still.