#3 The shock factor is there
Although his odds are currently 4/1 which makes him the third favourite the WWE universe would still be gobsmacked if the "Show off" won this match.
The Creative team have done a great job, intentionally, maybe of conditioning the WWE universe to not expect a Ziggler push to be consistent. Every time he has seemed close to a real main event push that would finally establish him they pull out the rug. The authority have even mentioned this is promos in the past so it is no secret.
What if this was just long-term booking done brilliantly so when they finally do pull the trigger the fans are behind him more than ever? The audience are always ready to get behind a hard worker that has been screwed by the system and no man has been held down more unjustly than Dolph.