David Shoemaker (aka The Masked Man) over at Grantland had a superb analysis of why DBD has gotten over.
http://www.grantland.com/story/_/id...restling-taking-center-stage-monday-night-raw
Basically, he says there were many factors in play. First, DBD was always seen to be "too small" for WWE, but was always seen by the IWC to be the best wrestler in the world. So he's always had that underdog persona. When he went to CZW to ROH to finally WWE, he was always the underdog and that's why he was supported. In WWE, fans liked him, they knew to boo him, but deep down inside they were happy to see him get a chance (he contrasts this with Cena being booed unmercifully, IWC's way of showing WWE that he's had too many chances, or to change his character).
Fast forward to WM. The smarkiest of all smark gatherings. It's packed to the rafters with hardcore fans. Their hero, their underdog, the man they've supported for years has finally come to defend his title at WM. He's come back from a dark match a year earlier to being the opening match, to set the tone for what should be an awesome and historic evening. Even though he's the champion, he's the underdog again, Sheamus is
expected to win the title by virtue of his push and Royal Rumble. So the smarky crowd adopts DBD as their own. And he loses, 18 seconds in. Shock sets in amongst the awestruck audience. They begin to boo the decision (not Sheamus, the smarks understand why he has the title) and the Yes! chant flourishes. People ignore the Orton / Kane match (a match they weren't really all that interested in anyways) to chant for DBD.
Fast forward to the next night at Raw. The same smarks are there from all over the world. The same ones that paid $X00 to watch WM in person, the same ones that paid $X0 to watch Raw in person, the same ones that paid for flights, accommodation, travel. The same ones that took time off work for fucking professional wrestling of all things. They were there and they wanted to make their voices heard. DBD was their hero and "Yes!" was their rally cry.
I didn't do it justice, but I tried to paraphrase a bit. Seriously though, read the article and rep me to let me know if you liked it. I think its an awesome analysis by Shoemaker, who is always on point.