The difference between those two laptops is the more expensive one is a 4k resolution touchscreen and it is glossy which means it easily reflects light. A 4k resolution screen means you need to rely on Windows scaling to scale up text and icons so they can be legible. There are programs that Windows will not scale up the icon sizes if they do not incorporate code which specifically allows Windows to scale up the icons. Old programs for example will have be programmed with those codes.
You will not be playing games at 4K resolution, the GTX 960m is simply too weak for that. You would need a laptop with GTX 980m SLI to get decent FPS at 4k resolution, though I am sure there will be games where the FPS will be less than 30.
The glossy screen means it is recommended you use it indoors. Using a laptop with a glossy screen outdoors on a sunny day can be very annoying.
You will also get lower battery life in the more expensive model because:
#1 - A 4k screen has many more pixels and each pixel draws power.
#2 - A touchscreen uses additional electronics which means it draws more power compared to a normal screen.