This is what we have so far:
CM Punk: January 1st- January 27th
The Rock: January 27th - April 7th
John Cena: April 7th -August 18th
Daniel Bryan: August 18th - August 18th
Randy Orton: August 18th - September 15th
Daniel Bryan: September 15th - September 16th
Randy Orton: October 27th -
I'm not saying this has been the worst year because of the people holding the title, I'm saying this may be the worst year in terms of the title's importance and the feuds.
This year it seems the title is definitely a distant second to the feud. Rock-Cena and The Authority angle had the WWE title as a part of a larger story, not the actual story itself.
Throw in the horrid feud between Cena-Ryback and the fact that the belt remained vacant for a month, I'd say the WWE title may be at an all-time low of importance.