Why Karo not Fitch?

Fitch is fighting Gono in march so the UFC obiviously is giving Karo the next title shot. Why? Just cause Karo's been in the organization longer? Fitch is 6-0 What was the point of the diego fight?

They want to give Karo a marketing push, he feels that people just don't know who he is.

The only possible rationalization for giving Karo a shot is that he owned the current champ.

Karo does not deserve a title shot. He cannot touch any of the top 5 and has beaten nobody to warrant getting a shot ahead of Fitch or Kos.