The reason Sanders distanced himself from Obama were different from the reasons congressional Democrats distanced themselves from Obama. You must understand this, if you understand American politics at all. Otherwise you shouldn't be on this board.
Maybe you can explain why someone who runs in a Democratic primary distances himself from the most popular Democrat in the country.
With a 47% Approval rating & where 80% odd of the country thinks that the country is going in a wrong direction. Bernie said he agreed with Obama on most issues & he gives him due credit for the recovery since the mess Bush left them in.
But there are differences & should be.
I personally would rate Obama as an above average to decent president , but not an amazing one, for which he was voted in office.
