Excellent article Tony.
In accord with the message of your article and according to Dr Al Sears MD, to obtain the same amount of nutrition from just one orange grown only a decade ago, you would have to consume approx' eight oranges today!!!
Superfoods such as Chlorella and Spirulina have few equals in their concentrated bioavailable nutritional content, but where targeted nutritional elements are needed in conquering disease, Orthomolecular Medicine has found that chelated minerals/vitamins fit the bill, where no other sources were found to be adequate in fighting disease and in the recovery of health.
I know of one case in particular where the sister of Dr Stephen Hickeys PhD was cured from a lifelong affliction of Eisenmenger Syndrome, with doses of 24 grams of synthetic Ascorbate per day: hardly achievable from an organic diet or even via superfoods.