That is old news....been there and done that. If you go to the source, you will see that those ratings are all on the API-SM, GF-4 Dino Oils and not the current SN, GF-5 rated oils. The addition of more Moly is in the recent SN GF-5 oils or those just before the introduction date of SN GF-5....before the label change.
Formula Shell was the leader of the pack, at that time for Moly, but don't forget, those tests were on SM, GF-4 oils...and not the current SN, GF-5 oils. (Take a look at the source for oils tested)
In order for Pennzoil to meet the requirements for the SN, GF-5 oil rating they had to "beef up" the add pack and add more Group III oil, to qualify the rating.
You also make reference to the UOA done by Bill. Could you please post a link for that particular UOA? Thanks
The increase in Moly, for PYB, is recent. The Test Dates for those oils was back in late 2009 and early 2010, before the SN GF-5 oils were released.