White Phosphor statements from someone there saying that current tubes are Gen 2?? The WPT are FILMLESS GEN 3 devices. Mediocre FOM 2200 and higher with an Omni 8 contract are Generation 2? Gen 2 has not been produced with any US company for many years. The only difference here is the phosphor screen color. In this case, L3 uses WPT with a filmless Gen 3 tube. In fact Harris (formerly ITT/Excelis) also makes a WPT Gen3 tube, but they are not in the wild as much as the Omni 8 Mil Spec WPT tubes.
Now with that said, there IS cheaper Russian true Gen 2 White Phosphor out there with low end numbers. My guess, this user may be a bit confused with some foreign tube offerings.
The argument between color is open to discussion of what users like between the two. We hear some love WPT's with less eye fatigue, some others think green is better on their eyes. No marketing here, but the filmless technology in the WPT L3 is producing looks better in extreme low light vs. green filmed. We are seeing S/N ratios of 38+ and 82LP with FOMS on some Mil units as high as 3200+. The color has nothing to do with the performance spec.