I don't want to criticize or come across as putting down but honestly (based on these videos) he just doesnt have a great singing voice, at least not in that range. Perhaps he had a hard time hearing himself during these videos? Everyone has their range and can be good at a certain register with practice and training. If he is singing in his natural range, then I dont know what to tell you. However, I dont hear many good singers these days. I'd say he is about average for the local stuff I come across. It is still music with a great melody and I would enjoy it live.
This is coming from someone who cannot sing a lick. So take what I say with a grain of salt. However, our lead singer is pretty good. Check out our video
http://www.youtube.com/watch?v=qWKzR5hOJGs