That is not even remotely what he said.
That's true, I think. The point made was that there's no real difference between brands, at least not the major brands.
Oil type, viscosity, etc. is a different matter, and that is where what one puts in a lawn mower can differ from what one puts in a diesel engine even if the brand is the same. Temptation didn't address that issue, only the question of brand differences.
It would be nice to see Temptation stick around as there are a lot of misconceptions, urban myths, assumptions, shade-tree-mechanic practices, second and fifth hand information, and opinions floating around with regard to lubricants, additives, etc. Having someone who worked in the petroleum industry could add some facts to the mix.
I think most people stick with the manufacturers' recommendation for their engines but the topic always seems to generate a lot of interest. The most interest seems to lie in the question of using current generation lubricants in very old-generation engines. The "Can I use 0-20wt synthetic in my 1950s era Ford Lehman 120?" kind of questions. Good, bad, or indifferent?
It's always nice to have participants ikn a discussion who can offer an answer based on reality and direct experience, I think.