I think Scott is a far better singer than Reuben. In fact, I think on pure vocals, Scott is the best male singer in this year's competition. Unfortunately, Scott doesn't have Reuben's natural warmth, ease and charisma.
Scott is not a bad-looking guy, but he has a round face made too full due to his weight. His too-full cheeks squint up his eyes, which makes it that much harder for him to make eye-contact with his audience. If there was some way he could soften his appearance and relax more on stage, that would help him a lot.
I never understood how Rueben won..MHO was/is that he is not very talented and Clay out performed him night after night....and you are right about Scott softening is appearance...it's too late to grow hair but he could change his glasses and stop wearing the big baggy clothes that make him even look bigger....and he doesn't smile much either...