The truth is, ammo or not, Trump would not have gone any easier on Sanders. There really is no way of knowing for sure, there’s evidence on both sides. I could just as easily claim that if Sanders never ran Clinton would have beaten Trump, and I think there’s a good case for that.
I should reiterate that I voted for Sanders in the primary. But I don’t all the “WOULD’VE WON” shit gets us anywhere at all.