Uhh, the 'conclusion'
"Ultimately I can’t recommend this camera. Canon sports shooters with a big lens investment would be better served investing in a used 1D Mark IV which will outperform this camera both in terms of image quality and performance, and everyone else should consider a D750 (or a D4s if you can afford it). Sure you’ll get less frames per second on the Nikon, but nearly all of them will be in focus and you’ll have killer image quality too!"
Whoever this guy is, he probably flunked second grade a few times.
I looked into switching to Nikon once. Selling my Canon lenses and buying similar Nikon ones was going to cost me $8,000 and get me lenses that were worse than what I already have with one exception. They were also bigger and heavier.
The very last Canon camera I'd buy if I weren't going to buy a 7DII would be a 1DIV. I hate the 1D bodies (too big, lousy ergonomics, don't like the non-removable grip) and I want a high pixel density camera. The 1DIV is a failure on both counts. I'd buy a 70D or a 60D before a 1DIV.
Having compared raw and JPEG test images, feature set and cost, I'd say the 7DII is the best crop camera on the market for shooting any sort of action, and second place is the 70D.
This guy is just too dumb to get it.