Biden, like Hillary!, currently look better because they have the freedom right now to not carry the water for all the Democrat's leftist causes.
However, make either of them the top dog, and I'm sure we'll soon find out that the Democrat's troubles go far past the current occupant in the White House and rather to their general philosophy. (Ah, when unchecked by a GOP legislature, ala Bubba '94-'00, that is.)
There is a cancer on the presidency.
This goes all the way to the top.
The only questions that now remain are what did the President know, and when did he know it?