Someone always has to have a tougher draw, but it doesn't always turn out the way many would have thought. For example, Murray has been getting tough draws in the last couple of years that have opened up due to injuries and upsets.
This AO, on paper, Djokovic had an easier draw than Federer, but looking at how players have played so far, it's actually quite even. PHM is still a good player and Stepanek played very well, better than expected. In the other half, Paire and Davydenko hardly showed up. Djokovic will also have a tougher QF (do you think Roger wants to play Berdych?). I'd still say Roger has the tougher draw overall, but I'd say neither is particularly hard or easy.