Both Roger & Rafa have had bad losses this year. The difference between the two is that when Roger loses it has more to do with his game than his opponent. Everytime Roger loses he has a very low 1st serve percentage and a boat load on unforced errors. It's not so much him getting outplayed by his opponents. Even when Roger loses to Rafa this is the case. When Nadal loses, it's because he gets outplayed by his opponents. Whether it's Djokovic, Gonzalez, Youzhny, Berdych or Blake, Nadal just seems to get outplayed by these guys when they are at their best. It's not necessarily anything that Nadal is doing wrong but what his opponents are doing right. Nadal's match statistics aren't that much dramatically different when he loses or wins. The question is what is worse: getting outplayed by your opponent or beating yourself. I think it's beating yourself which makes it tougher for Roger when he loses because he knows he shouldn't lose whereas Nadal can more easily brush off his losses acknowleding his opponent was better that day.