Yes Virginia, Warren is a stronger candidate than Biden. Much stronger.
Of the 8 contenders tailing Warren & Biden, ALL are more progressive than Uncle Joe. This means if the field was winnowed down to an understandable two candidates, Warren would catapult into a resounding lead over Biden. THAT’s why she’ll never jump on opponents; denigrating allies is counterproductive.
Even if Bernie inexplicably gesticulates to the bitter end (ala 2016), other candidates will feel braille on the wall. They’ll give up before primaries siphon crucial votes away from Warren. Voters will naturally gravitate toward Warren over Biden. Warren’s poll numbers can only “trump” Biden’s.
Nobody will say, “If Kamala-Pete-Beto-Cory-Andrew-Amy-Julian-& yes, even Bernie isn’t running I’m NOT going to vote. I give up!” These lower-tier contenders are now running out of pride and get ideas out (& perhaps a VP or cabinet post). It seems unlikely they’ll do a quixotic plunge to the finish line knowing a vote for them diminishes Warren’s primary chances. Hell, I wouldn’t be surprised if some endorse her.
Other Kos’ers can parse numbers, but it seems inescapable. Warren’s got the nomination.