boiled goose
good with gravy
I disagree with the assertion that Warren would have been more successful.
Hillary's success is her dominance with African American and Latino voters. While Warren would have gotten a bulk of that because "Not Trump" I think assuming that all of Hillary's support with those voting blocks is the result of her simply not being Trump is wrong. It ignores her unique strengths as a candidate.
Now, Warren would have done better than Bernie, I think, but that's neither here nor there.
Warren would have absorbed all of Bernies votes before people even knew who he was and stolen from Clinton as well. She has the pros of Bernie without many cons and is also a female. She would have easily won the nomination.