Djokovic was still far away from being a slam material in 2008. He was not ready, because from that point on it took him 3 years to win a slam(2011 AO). Between those 3 years he was constantly losing to Fedal at the grand stage. If he was really that good in 2008 AO as his fans like to overrate him, then he should have won a few more slams before 2011 AO, not winning nothing for 3 years. It took him time to get over the hump, and that should tells you that he needed a break when a defending AO champion Federer was in poor physical condition(mono) in 2008. Nole was an opportunist - he was lucky to be in the right place and at the right time.