Well it's a much greater accomplishment than being known as a prolific sheep shagger which is what most Welsh do best. :rasta
for starters joe isn't even welsh by birth, he is English, raised English as a minor, and that is the main reason why mentioning him above true welsh champions is so insulting. why should I name 3? one is enough, Wilde, and that one topples the statement made. Joe is not the best in wales, and not anywhere near a list in England. That said, you have asked for answer, however inappropriate your question may be, so I will answer your incorrect question as best as I can - Jones and Welsh were both excellent dominant champions that can be considered above joe, and that warrants three. I will concede that joe is "arguably" between 3 and 6 in the tiny, massively underpopulated province of wales. but in England, hes not even top 100.
are you serious, plenty of brit fighters won undisputed titles and defended them. all of them for starters are greater than joes unwanted wbo run.