Warren studies policy.
She knows how to incrementally establish policy in ways that affects MORE people.
He knows revolution isn't possible.
So when she issues detailed specific policy, she puts forth numbers and data that she can use to measure her arguments.
Bernie just issues widespread issues with no numbers so when he runs up against republicans he plays dumb and blames them for not following his policy instead of putting SOME points on the board.
With Warren you get actual points on the board.
It's dope that Warren has taken some of Bernie's templates and made them more ambitious for damned sure. Bernie's wealth tax plan last time was on the .1% rather than the .2% in 2016; his M4A plan was missing the Pell Grants expansion which is a great addition from Warren. And I think that Warren is the GOAT at explaining the wonk side of legislation...I pegged her as the bridge between Progressives and Centrists back in October because she's so good at that ish. She's proof positive we can get the party united around bolder legislation than party leadership seems willing to support (in my eyes).
I like Warren a lot but her policies have no more chance of passing a Republican Senate than Bernie's do. I would be happy with either one winning the nomination but let's not pretend that he's some dreamer idealist with crazy policies and she's has much more reasonable policies with a greater chance of passing in Congress. The fact is the two of them cosponsor most of the policies that the other comes up with. This isn't Bernie and Hillary, where people pretended that they agreed on most things when they were actually very different. These are two very similar candidates with very similar goals. Let's try not to tear down either one in trying to support the other.