Nice review Kent. You went to alot of trouble.
You are talking some nice shots
Personally I have found the Canon 100-400 works better on a 5D Mark III.
Not to do with the lens but the fact the picture quality on the 5D Mark III is much better than the 7D II.
The 7D II might be good for an APS-C but when you work with Full Frame it seems to be hard to accept the quality of current APS-C sensors
Kind Regards
Fergal