I've seen threads with people doubting Roy Jones Jr, I have a few questions

Why is it that when Roy Jones beats Badi Ajamu, people say it was weak competition and that Roy shouldn't get credit?

but when Wladimer Klitschko beats Elesio Castillo, a cruiserweight, everybody is saying, He's back? Or even a one dimensional Sam Peter who was probably a top 20 ranked Heavyweight in the world but somehow got a number 1 contender shot from beating some bum on Showtime?

Why's Vivian Harris given major props for stopping Stevie Johnston who's been off and is nowhere near as good as he was and is unranked probably but Roy can't get the credit for beating someone ranked in the top 5 in 2 organizations?

I just don't get it.