Why Salman was chosen over SRK for 'Shuddhi'?

Salman's confession has put an end to all suspense. It is now official that one of the biggest projects of Dharma Productions, owned by Karan Johar has chosen Salman over SRK for Shuddhi. This is a mystery, because SRK has been a very close friend of Karan. There was tie when Karan had come out in open and made an announcement that he will make movies only with SRK. The zealous Karan stuck to his promise and all the movies that he made thereafter had SRK in the main lead. So it is interesting to note why Karan chose Salman over SRK. We bring you a list of possible reasons and leave it to your own judgement: