Unless he could predict what was going to happen, that's called luck, mate.
Hah you sound just like Bishan Singh Bedi. To have guts to even be able to take those decisions when you are under most pressure is what makes it remarkable. I don't think any captain would have handed the ball to Joginder Sharma against Misbah in a WC final. Of course Misbah played a bad shot but it was the bowler and the pace at which he was bowling brought that shot out of Misbah. No one has the ability to control everything but luck is basically what you get after you give your 100%. That is exactly what Dhoni did in crunch situations where he gave his everything and then left it on luck. He had enough courage to trust his instinct rather than following on what was obvious. To state that he was "lucky" is diabolical.
It is unarguably the hardest job in cricket to captain the Indian national team. The amount of expectations, pressure the captain goes through is absolutely insane. One of the best thing that Dhoni taught Indians was that at the end of the day, it is just a game and not a life-death situation. You are likely to win some and are equally likely to lose some matches. It wasn't something new and we already knew this but the way in which he implemented that belief in the fans was amazing.