I would assume variance would be a reason as to why not to bet MMA, but to each their own.
Sure, it's simple, really. Hypothetically, you think a fighter wins 30% of the time; any lines which imply he wins less than 30% of the time contain "value". Most of the time you will lose these plays, but if you have a sufficient edge, you will profit from them in the long term. Not everyone feels this way, though, and some (such as our friend Gabe) generally only play lines that they think will win a majority of the time (generally, Gabe; I know sometimes you bet value, too). Given that I've made a lot of my profit over the years from undervalued dogs, I don't fall on that side.
Sure, it's simple, really. Hypothetically, you think a fighter wins 30% of the time; any lines which imply he wins less than 30% of the time contain "value". Most of the time you will lose these plays, but if you have a sufficient edge, you will profit from them in the long term. Not everyone feels this way, though, and some (such as our friend Gabe) generally only play lines that they think will win a majority of the time (generally, Gabe; I know sometimes you bet value, too). Given that I've made a lot of my profit over the years from undervalued dogs, I don't fall on that side.