I haven't watched the fight yet, but I thought that Chambers would win a UD.

From what I read about the fight it sounds like Chambers was obviously the more skilled fighter, but lacked the heart and effort.

If I were a judge I would take accuracy and effectiveness over pure output and busyness.

But it doesn't sound like Chambers was robbed or even "almost" robbed It sounds like he let Povetkin take the fight and it's his own fault.