Do you really think the M1 0w40 will work as well? IMO there are three (3) Mobil products that are better: Delvac 1, M1 TDT, and M1 ESP Formula M. Maybe a fourth product if you count the ESP Formula 5w30 as a different product from the Formula M.
Is there even any point in asking for factual proof of that assertion? Better for what? They are for different applications. The ESPs are low SAPS for DPFs. Delvac 1 and TDT are for truck diesels, mainly. Does Delvac meet BMW LL01? No Does 0W40? Yes. Just for example.
In my X5 35D I use LL04 oil which is also MB 22951; NOT Delvac 1 ESP which is not LL04 and meets 228.31, not 229.5 or 229.51 or LL04. Etc. Different oils for different applications; not "one fits all".