The fact that she has various limits on student loans forgiveness - $50k and income qualifications, I think that’s passable.
Her health care plan is passable
Her wealth tax is doable
She also has buy in from both sides of the party, to me, that’s the biggest component, any dem pres is going to need basically the whole party behind them in congress to even have a shot at getting things passed. A faction of the party hates Bernie, that right there is an impediment. She’s also 8 years younger than him and has more realistic shot of being a two term president - just purely from an age perspective - which buys her more time to get things passed.
So yes, the slight difference in their policy, along with her wider coalition of dems and age are what sway me to believe she can get more done. Bernie’s policies, as he campaigns on them, are hard left or die. I don’t think they’re feasible as he presents them and with basically a 4 yr horizon to get them done in.