Yes, helpful and interesting.
Seems there is no obviuos winner amongst the three which for me is a well done to Canon for putting such a good AF system on a much lower cost body!
Looking forward to receiving my 7d2
Looks like a quick summary is the 1D X has the best AF in most regards with a super tele, the 7D II is the best in most regards with a slow lens (slower than f4 wide open) such as the 100-400 II, and for other lenses, pick whichever body ticks the most boxes for you.
Agreed. Which makes sense, the 7D2 is a budget wildlife/ sports shooter's body and is likely to be used with slower lenses. If you want to shoot with a 400 f/2.8L IS II, you probably can afford the 1DX to go with it.