No matter in whatever situation India is on the field no matter how worst the condition our team is in, a match is never over if MS Dhoni is on strike.  

Such kind of trust has been created by him over years as whole India never loses faith till the time M.S Dhoni is on the crease. 

Statistically speaking, MSD definitely takes the crown. But I personally also consider the great Michael Bevan of Australia a joint number one with Dhoni. Although statistically, Bevan may fall just short of Dhoni on the number of finishes, and the number of successful ones. But based the way Michael Bevan played the game almost always under pressure, the emotions and respect he commanded and earned from fans, and the importance of those games he won for Australia, rate him a joint number one along with Dhoni. 

The other great finishers are Michael Hussey(Aus), Michael Clarke(Aus), Lance Klusener (SA), Shahid Afridi(Pak - statistically speaking not a lot may agree with this pick, but he did set many games up in favor of Pakistan, snatching them from defeat).