Are you comparing the two guys because you want to try and choose between them? This sounds incredibly over used but there ARE plenty of fish in the sea. If you're not totally feeling it with someone you shouldn't waste your or their time.
I definitely think attraction depends on personality but if you already recognize all the great parts of your friend and are still not physically attracted to him then it's probably not going to change in the future.
"Courage doesn't always roar. Sometimes itís the quiet voice at the end of the day saying, I will try again tomorrow."