I'll admit we were not surprised by the results of this video at all. You can configure your own DIY Custom PC machine with a more powerful processor, tons of RAM and an NVIDIA GTX series gaming card that is considerably more powerful than what Apple packs into their Mac Pro.
What I didn't realize or even think about until we saw this video was just how old and stale these machines are. 3 years after they were introduced and Apple is charging you the same price for the same configurations and same lackluster performance. If you are running FCPX you'll be happy with the GPU acceleration from the dual AMD graphics cards. If you're running any other apps, like Adobe Premiere, you're going to be much better off with a DIY Custom PC Rig or HP Z Workstation.
Samsung 950 Pro M.2 NVMe SSD - http://amzn.to/1pt0FLx
EVGA GTX 980 Ti Hybrid Graphics Card - http://amzn.to/1pt0JL8
EVGA P2 750W Power Supply - http://amzn.to/1p95Dgp
Fractal Design Nano S mini-ITX Case - http://snazzy.fm/PT7F3
Also, I incorrectly mention my computer as the $4,000 and it isn't—the base Mac Pro is $3,000. I did update the M.2 SSD to 1TB and so my specific machine is closer to $4,000; however, I apologize for the mistake.
Apple's Mac Pro has always had a hefty price tag, but it's 2016 and Apple hasn't updated the product line since 2013. Are we to the point where cheap PC builds can absolutely smoke the Mac Pro for a fraction of the cost? Yep.