When I worked for Mobil Oil we real world tested oils and greases in company owned engines and bearings in use. The components were then disassembled and sent for analysis. I was not part of any bench-top testing. But instead I'd remove wheel bearings and engine components for scanning electron microscope evaluation.
….and that's how it's supposed to be done.
When XOM/Mobil shows any type of "proof of performance", it's always shown via engine testing in actual engines through simulations and road testing. I've never seen Mobil engage in any type of silly bench testing or marketing.