He owns a Gen. He legit did a comparison between vsf, zzf and gen and the points he mentioned are facts. If you're not able to reply to his question with a concrete answer then if shows that you don't really know about subs. That being said lovely watch.
Unless I missed something, the (very valuable) comparison was done with a gen LN and a ZZF LV. The ZF was not in the panel. So typically no one has said so far which of the 2 has the LV dial that's closer to gen.
Any comparison, however thorough remains biased. I'm not saying this negatively at all, but we're all human beings and we all have things we care about more than others. For example I like the rehaut engraving better on the ZF than on the VSF. Even in the VSF samples where it's supposedly fixed it's still not as good as on the ZF IMO.
If you want to put a gen crystal then the fact that VSF has a better one becomes irrelevant.
See where I'm going? Even with flaws becoming smaller and smaller, every rep remains flawed and there is no absolute truth as to the best one. It remains a question of personal preference.