Thanks, Phil.
Linked below is a good article, written in 2011, which covers this topic better than the OP article and makes recommendations.
http://www.cyclingabout.com/700c-vs-26-inch-wheel-size-for-touring/
Taster: "The simple answer is that all wheel sizes work well if you use good quality components.
Why go 26 Inch?
– The tyres and tubes are easier to find in developing parts of the world
– 26inch wheels use shorter spokes than 700c to build a stronger wheel
– 26inch touring frames generally have greater tyre clearance for fatter tyres
– There are more wide (2+ inch) touring tyres available in 26inch
– 26inch wheels are MTB tyre compatible, for off road adventures
– A 26inch bikes lowest gear is effectively smaller than a 700c due to the smaller wheel size
Why go 700C / 29 Inch?
– Less rolling resistance than 26inch, as the contact patch on the road is longer and narrower
– Larger than 26inch, therefore they roll over holes and depressions on roads in a smoother manner
– There are more slick and city tyre options"