Hey,
Intel setup IMO.
More:
It completely DEPENDS ON THE GAME which combo works better.
Some games like Skyrim and SC2 are easily bottlenecked by the CPU. Some other games like Tomb Raider are less so. It's also important to note the "LOW FPS" scores in addition to the averages as the weak single thread performance of the AMD CPU's tends more easily to create a sudden stutter due to the CPU being temporarily overwhelmed with code.
I recommend the INTEL combination however since it allows you to upgrade the graphics card later (or Crossfire a used R9-270X for cheap if Crossfire improves which it may) but the AMD setup will remain a bottleneck for many current games and in the near future due to the poor single-thread performance...