He lost by 8 million votes. 8 million citizens decided to vote for Hillary over sanders. I wouldn't be too upset if Bernie was facing trump. I believe he would have won too. But people keep pushing this lie like there is proof that Bernie got his votes stolen. Even without super delegates he still lost in delegates and popular vote.You left out the part about how his own party undermined his campaign. Hillary learned from 08... formed her connections and made sure to torpedo any contenders.
Head to head Sanders would have washed her. He was more passionate and had much better school council president style promises
Bernie's problem was lack of marketing and how late he became known to the electorate. The "Bernie train " didn't pick up steam immediately and he was out hustled by a more experienced politician when it comes to getting people out to vote. During the primary, despite massive support among young voters, there were several instances where they refused to actually go out and cast a ballot. Older people who favored Clinton voted. Young people didn't. The most startling stat I remember seeing was only 13% of register young voters for example voted in the SC primary.
This is why Bernie lost. The dnc hacks just showed that internally the dnc favored Clinton but that doesn't have any bearing on young people letting their preferred candidate down en masse