First of all, Pakistan got the No.1 spot for a few days because India's match with WI got rained off. And now see how the big-mouths are talking of getting it back.
Looking like in 3rd test India will win or at_worst case it will be a draw then India will get 115 points ( if won), or 113 points (if drawn). At best case Pak can get 112 points (if they defeats WI 3-0). And we know what will happen to them when they will visit Aus in December, first they should think if they can hold 3 or 4 position in long term which is challenging forget no1, India will no1 at least next 2 years.