That's the whole idea. Don't engage in prolong Tug of war. Strike first and strike hard. Decapitate their advantages as soon as possible. Then dictate the war. Even in slow tug of war scenario, Nasr missile is there to counter 4th and 5th wave of armored ground attacks (where expected) , Indians are not crossing over into Pakistan. Indian only option would be to use conventional nukes after realizing they have lost the number advantage. So It's either win for Pakistan or total destruction in S. Asia. I highly doubt Indian will risk total Nuclear exchange even after losing their offensive and defensive capability. as long as Pakistan don't start going toward Delhi.