Yes, the Mopar Premium is basically the same as the Bestop Twill Supertop NX. That being said, they are not identical and I don't think that you can swap all the parts between them. The Bestop is probably the better of the two and is less expensive ($1,500 Amazon) than buying the Mopar from the dealer ($1,800). The Mopar top is attractive (less $) if your new Jeep has the Dual Top Group for $2,200 (1,200 for the soft to & $1,000 for the hard top). Otherwise it's common to find new or slightly used OEM Tops on CL for $500 to $ 1,000.
Edit: The costs are assuming a JKU. I missed if you are going 2 or 4 doors.