I never once brought up factual evidence just my own observation over the years both in real life and on websites like this. You're the only one using factual evidence to support your argument, despite sales not correlating with what people think of the quality of the series. I mean personally I've been collecting Dragon Ball merch, the entire manga, the entire anime series on DVD and Bluray my entire life and at I think the series is like a 5/10. You can still enjoy something and still recognize something isnt a quality work.
Why wouldn't you use actual evidence to support a claim though? That's just bizarre.Just goes back to my point that sales doesnt really equate to what people think about the series. Sometimes people just need hot trash in their life they can consume consistently because they may like a certain character, or they like a magic system, the art, etc. Naruto is cut from the same clothe though it isnt nearly as bad as Fairy Tail by any stretch.
Why does it matter if someone thinks what they are consuming quality work as long as they are enjoying it? You're argument was that people must not have enjoyed naruto to make them not wanna buy Samurai 8 ( a claim you don'y have evidence for). so i'm not really understanding what you're trying to say here.
Dunno why, in some aspects its even worse than fairy tail.