The stats doesn't show that the team is going down hill, which is not the case with his predecessors. Remember Azhar took over when all senior players suddenly left the team. He never had legends in his team. Under him Kumble, Sachin, Dravid and Ganguly developed. Ganguly took over when the whole team was shaken by the match fixing controversy. From there within 3 and a half year he developed the team into a world beater team. Remember under him developed Zaheer, Yuvraj, Sehwag, Harbhajan and Kaif. Rahul got a solid team. But now it is going down hill. If you had made this comparisn a few weeks ago, his stint as captain would have looked even more impressive. It is not always as it appears to be in stats, because as the name is it is static whereas the game itself is dynamic. So don't compare these as the situations for the captains were totally different.