Only on BITOG would someone try to argue Euro specs are not more robust and tougher to meet than SN specs

Where did I say that? Go back and read the entire thread before chiming in. Nowhere did I say or imply that Euro specs aren't "tougher". What I said, for the reading impaired like yourself, is that your "robust" euro specs don't guarantee longer engine life. They look good on paper, that's about it. There are too many other variables that come into play that have a greater effect on engine wear than what Euro approvals a lube has... and if the current API SN, ILSAC GF5 didn't provide adequate lubrication for the vast majority of passenger vehicles, where's the dearth of engine failures?.. where's the boneyard of dead engines that ran nothing but lowly old Jiffy Lube/PZ dino, why do N. American vehicles have a longer lifespan if the API/ILSAC specs were inadequate in re engine lubrication?
mad_hatter, You completely miss the point. Typical for all your posts. Read it all again.
And did you finish the Afton spec handboook yet? Until you do all that, you can't second guess engineers at Mercedes, BMW, VW, Audi, & Porsche. Sorry! Just the truth.
Maybe your core problem is with understanding oil change interval correlation with spec toughness, or maybe you can't understand high performance driving requirements. I don't know where you're losing it here.
And rudeness and name calling isn't allowed on this forum.
Nope..no core problem here. The only one with a problem is you, because you still can't back up your assertion that your Euro approvals guarantee longer engine life......but by all means continue to skirt the question.