Looks like an Amsoil sponsored chart...
It is, but I've found it to be fairly accurate. Companies will usually take the lowest number they get from this test, which does have variability.
*SA of Amsoil is 1.06
SA of Redline is 1.19
There is much debate whether SA is a factor in IVD's as you've seen in other posts. There seems to be a divide in the industry with Lubrizol on one side and some on the others. Most engines today are direct injection, so this is a pretty important issue IMO.
No one is worried about cam lobes wearing out as all oils crush the IVA wear test lol.