thorromig,
In defence of Ram Man, I really doubt there is any base stock difference between PYB SN and PP SN right before PUP GTL came along.
If you buy PYB right now I bet it is a GRIII synthetic, with a bit less TBN.
So I would wonder as well, can't you just run PYB as long as you would have Pennzoil Platinum?
I think people run "synthetics" too long, and "dino" PYB too conservatively.
I would guess PYB would be great for 6,000 mile / 10,000 km runs in a car like a 2014 Honda Fit.
I don't think you can use PYB in a DI engine because it isn't labeled a "synthetic", but I am not sure.