At the start of WoT, US always pressured Pakistan to use main srike force against taliban. Pakistan played Cold Start Doctrine well here and convinced the US and Other allays that it not favouable for Pakistan to move all strike forces against Taliban. That did following for Pakistan;
1, WoT is slowed down to the scale Pakistan wanted;
2, There is far less restriction on the use of modren US weapons;
3, Allowed Pakitan to keep on working on Nuc programme;
4, more importantly, Pakistan point of view regarding threat from india, find more ears in US policy cirlcles.
5, Convince Pak civilian leadership that army attitude and stance vis a vis India is correct.
So thanks to Indian Think Tanks for help.