Rikkitic:
You know what makes Biden a good choice? He won! Any of the other candidates might not have. They all would have made adequate presidents (well, almost all), and they all had appeal to specific interest groups, but only Biden was well-regarded enough and bland enough to be acceptable to a broad spectrum of interests in a very partisan time. That makes him a winner.
I think just about any Democratic candidate would have won over Trump, so we'll have to agree to disagree on this one.