I got my butt kicked again tonight, so I'm now down for the year even with live betting. I think what you said here may be the key for why some of us haven't been doing as well:
Favorites are on an extreme hot streak in MMA. I don't know if it's just luck, or the fact that a higher fraction of the cards this year have been "low level" (like cards on FX or Fuel), but people like me who like to bet dogs are getting killed.