Yes it is.He's the best player in the world.After the best season in the history of tennis he had a decent season.Now, there is no pressure on him, Fed is getting older and older, it's a big question when will Rafa come back and what form he'll be in when he does and Mandy(after that 2012 USO fluke) will return to his old ways.So, yes it's pretty safe to say that No1e will be a lock for at least 2 slams, maybe even more than that.
Federer also can upset him, but only on rare occasions when he's in Goderer mode and not Olderer mode.
That's what you would think, but if you look at it, on many occasions peak Nole still needs Olderer to blow match/set points before he can win against him. Djokovic is not in control in that matchup, unlike when he faces Nadal.
As for Novak's 2013 season, he should win at least one slam but it could be two as well.
Against Fed Djoko was indeed in control in that match at FO12,despite wind.You may say Fed was playing poorly but..
Further away my expertation for him in 2013 - 2 slams AO, USO, couple M1000, YearNo1.FO is still questoinable, while clay GOAT is there.