He was very close to beating him in straight sets. Rafa sure looked like losing in that moment.
That's kind of the point, Federer's had so many close-but-no-cigar moments against Nadal in the last 5-6 years that it's hard to be too enthusiastic.
He
could have evened the score at 1 set all in the 2008 WIM if he'd held serve.
He
could have led by a set in the 2009 AO if he'd held serve.
He
could have led Nadal by a set in the 2011 FO if he'd held serve.
He
could have led by 2 sets in the 2012 AO if he'd held serve.
Federer had only been broken twice in the grass season in the lead up to the 2008 final; Fed still lost.
Nadal played more than 5 hours in the semi final while Fed had an easier time in the earlier semi; Fed still lost.
Federer was the guy who stopped Novak's run in 2011, while Nadal went to 5 sets in the first round, and was a point away from losing a 3rd set several times against Anujar in the second; Fed still lost.
Federer was the guy on the winning streak at the start of 2012 after dominating the indoor 2011 season, and after thrashing Nadal in the WTF,
and not losing a set enroute to their meeting (compared to the 1 Nadal lost to Berdych in the round before); Fed still lost.
It's disingenuous to not see why Fed's fans aren't optimistic about his chances, we've heard this bedtime story too many times before, and there's only so many times someone can shout "boo" before you see it coming a mile off.
I agree that Federer's playing well, and that Nadal's form has dropped, but there's plenty of evidence to suggest that that's rarely mattered in the past so I fail to see why it makes sense to ridicule people for it.