In my opinion, there could be (and is) only one reason behind Rink ka King being more successful than Impact Wrestling (or even WWE) in terms of TRP so far, and that is because they are actually bringing forward a better viewing product than the other two.
See, if a show isn't good, it won't be successful in China; but if its a good one, it will fetch good ratings even in the Vatican City.
Ring ka King, in my observation, presented what we, the Indian audience were craving to see- A show that has action, drama, entertainment, and something different that none of the other shows have offered yet. And on that note, its also worth mentioning that part of its success is also based on the "new type of product" its offering, and it would be interesting to note where things go from here- (like a few others pointed out in page1) would they be able to maintain this success once the product starts to get old, or would they not.