Pete did so well to win, but as Rebecca said Greg was the only one with the bottle to say what everyone thought. I watched the match between Pete and Greg, and the fact is Greg should have won that match, he was the one with all the opportunities but didn't take them, it was from then on that Pete became the player he was for the rest of the tournament.
What you also have to remember is that Greg made that comment after just losing a tough 5 set match, when had he won it, he would have had a real chance to go a long way. Players often make stupid statements after a tough loss.