The western theater have only recently taken delivery of Type 15. It is a pretty new tank after all. Not sure why no Type 96, perhaps not suited to high altitude but then Type 88 is?! So probably has something to do with understanding that 1. any actual war would mean frontline ground forces will be wiped by initial Indian artillery and air strikes. Indians seem to think similarly with pretty poorly equipped frontlines as well. Any real fighting would mean frontlines on both sides quickly being destroyed with air forces vying for air superiority to destroy opposition artillery and support ground forces behind from moving in to territory that can really only be touched by missiles or long ranged artillery.
Anyway it doesn't make sense to risk much but there need to be physical presence to stop the other side from going in even for a dance routine. That applies to both. This is why we saw the photo last month of the two sides about 50m apart and then the new disengagement video showing the absolute frontline moving back and they were within 50m of each other despite using vehicles.
