His "buck passing" statement is really going to come back to hurt him.  (As it should).  Someday, there will be whole sections of graduate school MBA classes that will use the Trump 2020 example as Case 1 for how to NOT present as a leader.  But indeed, we already knew that his profound inability to accept criticism or admit any fault was perhaps his weakest point - that or lack of empathy.  

Found the Biden/Sanders debate reasonably interesting and much better without them "performing" for an audience.  Still not seeing Sanders really get at the heart of issues he put forth.  For example, what does he mean by people being "made whole" during or after this crisis?  Nobody is going to remain hole.  Perhaps some sensible legislation allowing payment holidays/deferrals would be of some use.  

Thought Biden was better in control of himself this time out and presented as the better leader.  But that's an opinion that may not be shared.  Still a ton of negatives about Biden but hard to see a better option among those three.