Yep, brace yourselves, the sh*t shovelling is starting!
Honestly, in a conventional war, India can cause some serious damage to Pakistan. However, Pakistan can and will cause an equal amount of damage to India. No one would win that kind of war, both sides will have losses and both sides will gain nothing. If it were to turn into a war of attrition, India would have the upper hand since its 5 times bigger than Pakistan but that will most likely never happen as the international community will intervene sooner or later. The best case scenarios in an India-Pakistan war are:
-For Pakistan: Pakistan seriously damages IAF and Indian Armour, pushes deep into Kashmir, captures and defends its positions, India retaliates with massive counter attacks all over Pakistan, they are repelled and the International Community intervenes, Pakistan gets to keep a little bigger part of Kashmir.
-For India: India seriously damages Pakistan's military in general, takes over a good portion of Azad Kashmir and threatens Islamabad and Lahore. Pakistan arms and prepares nukes, International community intervenes, India gets to keep a bit of Azad Kashmir and other territories here and there.
Both of these scenarios are really, really not worth the lives of a couple of million Soldiers and Civilians, not to mention a possible nuclear exchange - I sure hope Modi doesn't start actually believing his bravado and do something as stupid as starting a full scale war.