This is a tough choice because a lot of these feuds were just wretched. Alberto Del Rio and Rob Van Dam brought us the pointless pairing of Van Dam and Ricardo Rodriguez plus it made absolutely no sense to have a triple threat where Christian wins the title shot over Orton and Van Dam, loses to Del Rio, and Rob gets the next shot anyway. Nothing good came from that feud.
Big Show vs. Randy Orton wasn't all that horrible but it leaves a sour taste in my mouth because it comes off the back of them blaming Bryan for the pay-per-view buyrates and going back to pushing larger than life contenders to the belts. Big Show can be compelling to watch and listen to in the build to matches, but when it comes time to wrestle that match, he generally stinks up the joint and from what I've heard, these two had a bad match.
Chris Jericho vs. Fandango was completely pointless, especially since Fandango has gone on to be a jobber. This feud did nothing for the career of either man and honestly, I had pretty much forgotten they feuded until I saw this poll.
John Cena vs. The Rock deserves to be on this list, because the build for the rematch was absolutely terrible, and a lot of that had to do with them being all buddy-buddy and the fact that you could see how it was all going to play out coming months in advance from Rock winning the belt to Cena taking it from him.
Ryback vs. CM Punk was another pointless feud, and a lot of that has to do with the stuff between Heyman and Punk lasting well beyond its welcome and the fact that Ryback should've never been turned heel when he was.
Ryback vs. John Cena was yet another pointless feud. They turned Ryback heel when they shouldn't have and the whole thing felt like a spiteful move on their part, just so they could say that hey they created a fresh contender to the belt, even though he lost. I can't say it was the worst though because I'll be honest, there were some promo gems here and there during this feud.
I don't even remember The Miz and Antonio Cesaro feud, and I barely remember The Miz and Fandango feuding, so I won't comment on either. To me, The Miz versus Wade Barrett was the worst feud. No one cares about Dead Man Down or The Marine 3.