If I had to guess, I'd say that TPA is currently really Williams/Bally-heavy and they wanted to include another Stern table. The problem is that almost all the Stern tables have potentially expensive licenses attached to them. The Harley Davidson license was probably not as expensive as most of the others, so it got the nod even though it's not all that great of a table.
For their cheap-licensed (at least probably) tables, I personally would've preferred Monopoly or Rollercoaster Tycoon. Other choices would be LoTR or Elvis, though I'm not sure about the licensing for those (especially Elvis.) As long as it's not Austin Powers (huge fan of the movie, not the pinball machine.)