at this point it comes down to skill and tactics.
I simply don't believe Sanders. He's got a long track record of just kinda being sparse on details (cause he doesn't have a law degree, or any professional degree which kinda matters) and never truly engaged in the depths of policy like that so anything he proposes is by its nature vague and general. Its the same reason you believe some people's raps over other people's raps. The raps on paper might sound nice, but they have more weight when certain artists say them.
Pragmatism matters to me, so I'm going with what Warren is proposing.