I don't care what your review claims about SPECS. What counts is what can they do with those specs.
First of all, for example, your resolution comparison of the iPhone 6s and the Samsung Note 5 is meaningless when you realize that after a certain resolution the human eye cannot discern any more detail beyond what it is capable of resolving. Adding more pixels just to add numbers beyond that which can be discerned by the eye is mere advertising hype. In fact, more pixels than necessary actually slows down the graphic ability of the device to move those extra pixels around in animations for no good purpose.
Secondly, the iPhone's have had 64bit processors for far longer than any Androids have had 64 bit processors, and those processors with the dual cores, and the amount of RAM supplied have been soundly beating the four and now onto-core processors of the processors in the Android and even Windows phones and tablets for over two years.
Thirdly, and this is related to the second point, you are wrong about the smoothness and switching of apps. The iPhone 6S Plus beats the competition in all the Geekbench tests and real world tests, by quite a bit. It isn't even close.
These benchmarks are from last year, but the iPhone 6s and the iPhone 6s Plus is even faster, with a nine times FASTER graphics processor. I'm including them to prove my contention the iPhone has been faster for years:
Finally, as for the cameras, the Samsung Note 5 does nicely in daylight if you like cool photo colors, but it fails in low light conditions. The iPhone 6s Plus is produces equal quality pictures but with warmer colors. . . But is much better in low light due to larger pixels with a microscopic black "wall" separating the pixels in the CCD preventing bleed over of light. The iPhone 6s Plus's motion damping system is far better than what is provided on the Samsung Note 5. Both offer 4K video recording but only the iPhone can do 240 frame per second high speed recording for slow motion native to the camera. The iPhone also provides on device video editing.