Yes its same but the marking is not at the top. I assume its incorrect.All of the passes in the list are mapped out. A few aren't accurately marked i.e. they are marked on the route, but not at the exact point due to lack of coordinates.
Isn't Nurbu La same as Nerbole? If yes, then it is marked on Google Maps 3-4 km ahead of the location you dropped pin at and around 18 km from Ukdungle.