Keep in mind, Pakistan Army has been fighting an intense insurgency since 2004. Pakistani Regular Units are constantly rotated to the War Zone and are well versed in fighting insurgencies operating among Civilians. Indian Regulars are largely trained in Conventional Combat, which largely involves using overwhelming firepower to decimate the opposing side.
This is an interesting exercise. A great way for the Brits to study how other Forces around the world operate, and incorporate those teachings for their own men. Kind of reminds me of the Red Flag, where younger rookie USAF pilots are sent against experienced pilots of other countries to study the tactics of the Opposing Forces. Very Clever.