As I read this, this is a generalization that makes a direct comparison between stones from two sources. Also, can you provide something that backs up this guy's reputation?
Also, finer is not necessarily better. There are lots of factor that come into play, and "finest" only matters if you are looking for a finisher, which is not the only reason people buy Japanese naturals. I like the "Nakayama" I got from 330mate because it is a good intermediary hone. I like my Asagi from O_S because it is a good finisher. One is not better than the other, they serve different purposes.
If I'm reading this right, you have tried one hone from 330mate off ebay and you have one Narutaki Suita. So is the generalization based on your findings from these two hones? If so, I think you are seriously lacking in evidence. If you have more evidence, I think it would be benificial if you would be willing to share it with the forum.
I also don't understand what taking pictures of edges has to do with writing about your personal experiences. Personally, I largely ignore pictures of razors' edges because I don't know enough to look at an edge and determine anything about its quality. I also do not corrolate a shiny, polished edge with a great shave, because, from what I've seen and shaved with, there is no direct corrolation.