Very easy. Very OK game for Djokovic, very NOT OK match for Kohlschreiber. Djokovic played this game like he has 100 years of experience. Didn't break a sweat. He played in 3rd gear and he seems like he has 5.
The thing that worries me about Nole's game is that he got only 3 aces (two of those aces were last two points which I believe Kohlschreiber just let go)