No justification claimed, set that concept aside and open your mind... are you open minded?
At _no_ time did I ever suggest that the 6 Plus was _superior_ to the 6S Plus.
I am fully informed as to the technical details, and specifications of each Apple product I own... or choose to focus on.
Make no mistake, I don't embrace guesswork, I use facts. Always. Without Fail.
What I _did_ say is that for my use, the Force Touch / 3D Touch tech that is one of Apple's bragging points, is of no use to me. That's not to be confused with one stating that it's useless.
To the contrary, it's a great technology that when properly matured, sorted, and embraced by all app developers, will be very useful IF that's what one likes. But even it perfectly sorted today, I would not use it.
An example of the concept:
Some laptop users prefer using a mouse no matter how great the trackpad is on their laptop.
I, on the other hand, always prefer Apple's trackpads and hate using a mouse.
See? Personal preference.