No, every album has a chance to "flop", but I don't think ARTPOP can, after all the hype that was created last week.
You all act as if BTW was like Lotus or Warrior, I mean it sold over 7m WW which is much mora than what a regular pop girl sells right now (Rihanna or Katy Perry), and she grossed almost 200m with the BTWB, so I don't see why she would flop this time.