| I didn't click the YouTube link, but fwiw I agree with the original premise: Some guys are not cut out to sing the blues.
The example I usually give is comparing Robert Cray to BB King. When I first heard Robert Cray he was singing some cliched line like "I've got the blues" and I immediately felt like something was off. It didn't ring true. It didn't sound sincere. I literaly said to myself "He's lying, he doesn't have the blues!" And then coincidentally not long after that first exposure to Robert Cray I heard a BB King track on the radio, and he didn't even sing, he just played a couple notes on his guitar, and I immediately said to myself "He's got the blues!" | 
