See Andy this is why people stop responding to you, you intentionally twist their post and lie about a basic fact just to piss them off so they will argue with you. Wozzy was very clearly talking about wingspan not arm length and yet you keep going back to that. That's dishonest just to provoke frustration. It's a measured fact Campbell is anywhere from 4-7 inches short of NFL average not "an inch longer finger" which again you keep repeating as fact when it's not. You keep saying show me the proof when you won't even admit the basic fact that he does have a significant small wingspan.
In your Moss example, how much of what made Randy so good was that he was 6'4? He just flat out went over people, granted his 40 inch vertical didn't hurt, but how many catches would he have had if he was 6'1? Probably still a ton because speed, route running, and hands are way more important then height but people guessing Moss has maybe 90 or 95% of his production at 6'1 aren't crazy. Height matters just like wingspan matters. It's not the be all end all measurement but bigger IS better.