Wow. There seems to be a debate in the comments. I do agree that the test results slightly favour Adobe, partly because Adobe sponsored it, and also they were doing the tests on an Nvidia card.
However, on fully maxed out systems, there is no comparison. Adobe's suite is far more scaleable than FCP X, especially as Apple has not done much short of a half assed update to the Mac Pro. Take a top of the line PC with a RED Rocket card, maxed out RAM and a Tesla or two Quadros, with 3 hours of RED footage for a spot, and you're spot is probably on its way to the network with fancy 3D text and particles, while the Mac Pro is still transcoding the footage to ProRes.
www.strypesinpost.com