Because Babur is a DIFFERENT system, its design and application is different so is the doctrine its designed for. Babur's main objective is to give PA the ability to surgically destroy 'tier 1' C4ISR infrastructure of the enemy as well as to attack other high value targets while staying off the battlefield. Babur is also designed for being launched from Augosta-90B submarines to deliver a nuclear warhead giving Pakistan a second strike capability and a partial nuclear triad. (Triad is ability to nuke the target from Land, Air or Sea)
Ra'ad has a range of 350km and its designed to again destroy high value infrastructure of the enemy while staying off from the heat of battle. It can also deliver a tactical nuclear warhead without being seen on enemy radar. Ra'ad can fly on a tree top level. The Norwegian Naval Strike Missile has a maximum range of 290kms. That is not because Raad and NSM can't have extended range but that is the range planners need to do the job they ought to.