Sorry, have an S7 and 6S Plus. iPhone is faster at everything, in some cases a lot. The S7 has a nicer screen, but the color is off. That's because neither Android or Samsung has color management, while iOS does. If you like cartoon colors, the S7 is for you.
iPhone has superior video (and does 1080P at 120 FPS which Samsung lacks the horsepower to do). IF you take time to set up your shots the S7 it can take better pictures. But only slightly better, and in day-today shooting that most people do the iPhone will producethe better result.
There's no equivalent to 3D Touch on the S7, but I'm sure Samsung will get around to adding it.
S7 is using inferior UFS storage (after bragging when the S6 was the worlds first phone to use it) while getting left behind by Apples superior implementation of NVMe (which nobody else uses yet). S7 is also using inferior software encryption while the iPhone has had it since the 3GS.
But hey, the S7 is definitely shinier. Add some widgets and animated wallpapers and your Honda Civic is all decked out.
Care to explain in what exact situations the iPhone 6s Plus is faster at everything? I've got both and I'm happy to test the same situations, cause I'm somewhat at loss to see this major performance jump you talk about.
I prefer using my iPhone 6S plus as the daily driver, and the s7 is a limited edition, so just a collectors piece, but I'm intrigued by this performance issue.