I think people need to stop taking the word "personality" literally!!! Whether you like him or not Andy Murray single handedly won a Davis Cup for GB and IMO is a worthy winner. Forget the fact he's a miserable twonk...... to win a couple of grand slams + Olympic Gold in the era of Federer, Djokovic & Nadal makes him a hell of a player in his own right. Any other era and he'd have won half a dozen minimum. If we're going to dish out awards for personality why not give it to Kriss Akabusi or Eddie Edwards every year!
As for Sinfield, great recognition for an outstanding club player (didn't do it for GB or England IMO) and just rewards for a top career (bit like Giggsy in 2009). Hopefully England RL can win the WC in 2017 and there is a huge push from the RL fraternity for Sam Burgess..... freak of a player and would certainly be worthy of such an accolade.