Well, not in Pennzoil's defense but as a side note: your top pic shows 0W20, the top right is unknown, and the bottom right shows 5W30 at the very bottom. So maybe the different weights have different results on the test in question? Certainly feasible that the add pack in different grades is not identical.
Here I thought you were going into the Pennzoil Extended Care, Pennzoil Start Stop Protection, Pennzoil Maximum Power and Pennzoil Hybrid fiasco. That says more about their marketing than an inconsistency in test results across different grades of oil, IMO.