I mean, unless we are talking about non-ILSAC grades, whether it's Quaker State or Pennzoil, they are both limited to 800ppm of Phosphorous max. Quaker State is a more "value" tier product in the SOPUS product lineup than Pennzoil, but I'd be cautious drawing conclusions from variations in VOA's, particularly if they are from different labs.
TGMO may have more moly, but it's likely dimer, not trimer (Mobil and Shell both tend to use trimer) which requires a higher treat rate for the same degree of effectiveness. Historically, it's high VI meant that it was blended with extremely thin base oils and using lots of VII polymer plastic. Not the hallmark of a great product, but definitely cater to fuel efficiency.