I played both at TPF, and have played TH several times before. I really wanted to like the Hobbit, but it just doesn't generate strong emotions and feelings. The eye candy is impressive and the rules are deep but it is confusing and lacks shots, it feels a bit repetitive too and maybe it's the widebody but it does not have the speed and snappiness to it.
GB on the other hand seems like a killer pin, the art work is great and so is the music (and unlike GoT, it's not just the theme song but the music and sound changes depending on what's going on). It has speed and tight shots and that 'one more game' draw. The only big drawback (to me) is the DMD, the dots are fine but I'm missing the awesome graphics of TH and WoZ