Being solid is what won Djoker those matches, it's not like he played jaw-dropping tennis.
So then he should be given no credit?
So, save for the stamina advantage, Federer should be 5-2 this year against him?
Djokovic played brilliantly in the Wimbledon final, and returned unbelievably well against a Federer that was serving in the high 60's. He saved a set point in the first set with an unreturnable serve, ran Fed ragged in the tiebreak and won sets 3 and 4 quite comfortably.
Now that Novak is gaining on Fedal he's getting smeared the same way that Nadal was back when he was a dominant champion, by claiming he does "nothing spectacular" and plays "boring tennis". Yes, these claims were both in vogue when Nadal was sweeping the clay court events and making deep runs at HC slams. It held no weight even then, but personally I find Novaks game more interesting to watch than Nadals. Aesthetically his strokes are a lot nicer/more fluid. He's one of the cleanest ball strikers of all time. And defensively nobody is better on a non-clay surface.
That last point is important. It's as if people want to ignore that Djokovic is one of the best defenders of all time and one of the best at turning defense into attack. Why is that not 'jaw-dropping'? Because it's not as easy on the eye? Well, defense and athleticism are some of the hallmarks of the modern game and he's tops in both categories.
His return is also more than just 'solid', it's arguably the best ever and the depth he gets on an average return forces offensive players to go for more on their serves.
To boot, people can decry Djokovics post-2011 reversion to counter punching all they want, he's still a more offensive player than Nadal and many other top players have ever been, and in a pure baseline tug-of-war is almost impossible to beat.