First of all.... Camera Experience =/= Picture quality. Yes Picture quality plays a part, but things like ease of use, speed of capture, shutter lag etcetc adds up to the experience. Your entire post only hound on picture quality , which i have earlier stated is very, very subjective.
Also Personally the shittest Flagship camera to me is the HTC One Series. That one ;;; Abit sad, cause they were trying the ultra pixel thing....but... i guess execution didn;t carry out properly.
I'm not even considering HTC when I compare image quality... poor HTC lol.
and yes camera experience and picture quality are different things. maybe I worded wrongly, but I meant the entire process - frm taking the phone out, to launching the camera, to snapping a photo, to have it saved to the gallery and finally to have it look good.
what you mentioned like ease of use, capture speed/latency are absent in Sony. let me rectify first by saying that at least from YouTube and what I've observed at 313@Somerset, Sony nailed the AF speed even without laser AF and those gimmicks, so kudos.
now my best friend, her bf, her sister and her sister's bf all are using Sony because of my persuasion but she always tells me the camera isn't good. to her (the average consumer), Sony Xperia phone cameras are slow to launch, slow at focusing and take average photos. now some fan boys won't like it but I think the perspective of a fan boy comapred to what the average consumer thinks are always world's apart.
next, how is the Xperia camera app capable of providing a holistic camera experience on a smartphone? let me give a few examples:
1) no true Manual mode. "Manual" mode tweaks a few things like ISO, WB which are weirdly negated when you switch to certain modes. but wait! you say, Apple's camera app has no Manual mode too. yeah they dont, but their Auto mode is one of the best around and do you really want Sony to be comapred to Apple?
2) small details like, exposure slider and HDR toggle are not omnipresent. you have to often dig through the settings just to find basic things like this that are already in their competitors' camera apps.
3) most frustrating of all: the extreme stupidity of why using Quick Launch = SA mode I will never understand, especially if you last used Manual mode. like ??? I don't get it
4) I agree that Sony Xperia has decent camera sensors that can take decent photos, but
only if you set everything up correctly - the scene, the camera settings like scene mode, ISO, WB, HDR etc. and then finally you will get something comparable.
but look, most people just gonna point-and-shoot. this is the reality of this era and smartphones. people wanna take it out, take photos of the sunset, their dinner, their friends, their babies. photography has evolved from taking model photos and landscapes to capturing your life.
thus the average person has no technical ability to "set up" their camera like how Sony needs to be in order to be good. they only know, launch, tap, shoot. who does that the best? your answer will tell you why that particular phone is so popular.
again, I must emphasize I am not anti-Sony. I said it before, I'll say it again. I've used every Z-Series phone except the Z1 Compact and Z Ultra and I like so many things like build quality, water resistance and battery life.
but look, camera is one aspect that an OEM can never run away from and Sony sadly is horrible at it, ironically. I've said it before too that it's very frustarting because these guys DESERVE to do well but they don't.