First of all, I do appreciate you doing your homework on this instead of just fanboying over Craig.
BUT - I have to completely disagree with you.
Before I even get into WHY I think Craig's voice is weak, I'll say this - You don't have to be a great vocalist to recognize a bad vocalist. I'm not a professional chef, but I know when food tastes bad.
As a vocalist, Owens is questionable, at the very best. His range is very limited, and he's got absolutely no power to his voice whatsoever. You reference acoustic YouTube videos as evidence - that's just proving my point. It takes absolutely ZERO power to sing over an acoustic guitar. Regarding his range, his highs are very, VERY thin, yet he continues to reach for them on a consistent basis - and that's acoustic. In full band, when trying to hit highs with a full voice, he consistently misses them or points the mic to the crowd (Again, I've watched him do it live OVER AND OVER AGAIN).
Regarding your statement "your standards must be atrociously high for a rock band" - you are absolutely, 100% correct. Are you suggesting there's something wrong with that? Touring musicians create music as a PROFESSION - I expect them to be the best, night in and night out. That's literally their job. So yes, I do hold vocalists to an incredibly high standard. In all the concerts I've been to, Craig is EASILY one of the worst. In his genre alone, there are many, MANY better vocalists - I The Mighty's Brent Walsh, Dance Gavin Dance's Tilian Pearson, Culprit's Travis Powell, Hance Alligood (as you mentioned), Issues' Tyler Carter, and many, many more. Don't even get me started outside his genre.
Also, couldn't help but laugh at your criticism of my Woe review. Basically, you admitted I was right, then just went after WHERE I placed a certain score? Got it.