From https://www.astm.org/Standards/D7098.htm:
Quote:
Within similar additive chemistries and base oil types, the ranking of oils in this test appears to be predictive of ranking in certain engine tests. When oils having different additive chemistries or base oil type are compared, results may or may not reflect results in engine tests.
So yeah, ASTM apparently believes TFOUT is a decent test -- but not a valid way to compare lubes with different chemistries.
So, I'd think the big question for MOA is whether it's substantially changing any given oil's chemistry. If so, then even these impressive TFOUT improvements would be meaningless on their own.