It’s not being pompous. It’s stating the obvious. Your example is Hillary and Obama is not analogous. While you are correct that Hillary had a big lead over Obama at this time in the primary. She led by 18 points. Hillary, while very capable, was and is unlikable. Obama was a special candidate who was charismatic, likable and a great orator. Neither candidate had hardened support.
However, Trump leads by an unbelievable 45 points. That’s a national average of all the polls Trump’s support is hardened. No candidate has ever had this type of devotion by his followers. It is cult like. That which we have never seen before. (Forgive me for using a Trumpism).