If you want to be taken seriously, you need to make sure your facts are correct.
Disclaimer: I don't intend to be taken seriously. Happy?
"not only on RAM quantity but now type of (LPDDR4)"
Ok didn't know that. Strike it off the list. Still, 3Gb of LPDDR4 > 2Gb of LPDDR4. Case closed.
"such as camera (quality & resolution)"
The S6/Note 5 have the best camera sensor right now at 16mp and 1/2.6'". Apple would need to improve on this by implementing a bigger sensor.
I will wait for DxO mark to review the camera before drawing a conclusion though.
Wait until the new Xperia Z5. I've seen photos taken by journalists (not the utterly stunning ones demo'ed by Sony) and they were, ahem, equally stunning. Different class to the iPhone altogether.
"screen tech (OLED > IPS)"
Right it's probably time to move on to OLED for the increased power efficiency. That being said let's wait for displaymate to review the 6s before deciding whether one is better than the other.
My sister visited me a couple of months ago. She's an avid iPhone user - she'd had, I believe, every single one. Upgrades religiously. We went out mountaineering (I live in Switzerland) and I forgot my DSLR, so we ended up taking photos with our phones. We used the phones about equally much, which was a lot.
Now, at the time she had the 6, so of course, put this in perspective. But three things happened:
(1) she was amazed at how good the (rather unspectacular pentile-matrix 1280x800, if you ask me) AMOLED looked compared to her IPS, which was definitely washed out when looked at side-by-side.
(2) she was amazed at how much better photos my Alpha took, as in, there was really no comparison (mind you, it needs reasonably good light and we certainly had it)
(3) her phone died at some point. Mine lasted until we got home. True, I had to turn on the power-saving mode in the evening, but it saw me home.
"battery life"
I am very surprised to hear that you included this. I guess you mean battery capacity, not "life".
http://www.anandtech.com/show/9662/iphone-6s-and-iphone-6s-plus-preliminary-results
Battery life seems to be the best in class.
One of the reasons why I am considering switching to an iPhone is because of the battery life. My Note 3 has horrible standby battery life and this is one issue that has plauged Android phones since inception.
I'm not sure what you mean by "best in class", but my father-in-law's ancient Z1 lasts two days on one charge. I saw this first-hand.
Until they fix the wakeclock/google play/ etc, they phone just drains away even when not in use.
Personally I don't have any battery problems with mine. Lasts a full day with my use pattern.
Unless the 6s lasts two days on a charge, it's far from being "best in class".