#2 Because Dolph Ziggler is the king of the post-WrestleMania season in WWE
Then-Mr Money in the Bank Dolph Ziggler & Big E (who performed as Big E Langston at the time) faced WWE Tag Team Champions Daniel Bryan & Kane at WrestleMania 29 on April 7th, 2013. Well, although Ziggler & Big E failed to win on "The Grandest Stage Of Them All", the first night of 2013's post-WrestleMania season belonged to none other than "The Showoff"!
On the RAW after WrestleMania (April 8th, 2013), Ziggler cashed in his Money in the Bank contract on then-World Heavyweight Champion Alberto Del Rio -- taking advantage of an injured Del Rio, and beating the latter to become the new World Heavyweight Champion.
The aforementioned Money in the Bank cash-in is considered to be the career-defining moment, in Ziggler's professional wrestling run thus far.
It's no secret that Ziggler has a terrible record at WrestleMania, however, history is the witness that'll testify, how Ziggler has always been one of the major players in the post-WrestleMania season in WWE right until the Royal Rumble PPV the next year...Which brings me to...