You must be a soothsayer, telling me about differences in camera lens glare etc between my 135 and 120 cameras. Actually I had a laugh at your post as I never used either film in a 35mm camera. The last time I used 35mm B&W film was about 40 years ago and it would have been HP4.
Anyway, In the darkroom, VP and PX are completely different films to print, but the Kodak rep that used to visit the camera store in Denver weekly told it best. He said that VP cost a lot more to make than PX but Kodak couldn’t stop making it because it outsold PX by a wide margin. He said that the PX at the time, early 90s, had become a test for the TMax films. (TX is now manufactured in much the same money saving way)
Anyway, I’d suggest that anyone that says PX and VP are similar has never printed them in a darkroom, totally different films.