You can read all about Lumia 950 and Lumia 950 XL at our dedicated pages.
We have also posted comparisons between Lumia 950 / 950 XL and latest iPhone 6S and 6S Plus and also between Lumia 950 / 950 XL and Nexus 5X, Nexus 6P that gives you a good idea about how four devices compare to each other in terms of specifications, feature and price.
Thanks Xio-Feng for the tip. Cheers!!