The Comprehensive Corrosion Test was thoroughly and thoughtfully done. I have seen several of these type corrosion tests on the net. Rarely do the testers replicate their experiments as this person has done. That makes the experimental results much more robust.
Different testers around the net report results that differ from each other. However, there are several brands that consistently come out on top and a few that always are near the bottom. EezOx, Barricade and Frog Lube generally finish near the top, Rem Oil and regular WD-40 dwell near the bottom. WD-40 did well in this test, but it is the "special," not the normal WD-40.
Many tests in structural civil engineering (concrete as an example) use extreme conditions to test the limits of the strength of the material, often testing the material to failure. Testing under extreme conditions is due to time and financial resource limitations.
Ron