Look, let me get out of the way right now that the guy can sing, and he seems to be an A-one guy all around
But I just find his voice to be fairly bland (I have the same criticism of Russell Allen). I get it, not everyone can be Ozzy - and who wants to be? - but there are just guys, like Roth, Hagar, Dickinson, Perry, Halford, LaBrie, Ozzy, Coverdale, Gillan, Collins, Lee, Stanley... who they can sing three notes and you know who they are. I just bought Trilogy, by Yngwie and I was like "I thought Mark Boals sang on this; it sounds like Soto!".