Let me just ask you a simple question, you don't even have to answer it, because the sales data already has, and the views can easily prove my point
Which is more attractive in a commercial? (insert Geeky Socialite Samsung vs Emo Loner HTC ads)
So which do you think is more attractive and stand out feature to the average mainstream consumer who just walks into the store, purchases a device and has no clue that Android Central, phone dog, pocket now, etc exist?
The most attractive to them starts with the default home screen in the store. HTC has this ugly purple bruise that makes my eyes slide right past it. Neither commercial really shows any viral potential, 500k views is easy. Samsung's whole strategy is to throw in enough features that mkst customers - asking about a buzzword to look smart - will be told 'sure we can set that up before you leave the store'. HTC as always doesn't seem to have a strategy. Even the posted selling guide shows a lack of imagination. This is very pronounced with how the One Mini and S4 Mini were specced out, the S4 Mini is better balanced and more useful.
Sometimes this can work against Samsung. Claims of 'too sensitive' or too many misclicks is probably related to hover or glove-mode being on and them not keeping their finger far enough away, but people perceive a bug from their mistake....and good luck to them finding the menu setting in that forest of icons.
Not sure why you keep bringing the zombiPhone into this, it's a terribly limited device with flawed aesthetic and irritating software bugs. I keep having to tell people 'no you can't replace that' and it makes them very unhappy.
My only Samsung is a Tab 3 7.0 LTE which has the same setup as the Mega and the Mini. Multi Window is *very* well supported by the software that I use, including MX Player and several office programs. Voice controlled camera and alarms have been useful all the time and universal remote works much better than I first expected. S Voice is a gimmick but twice so far I actually appreciated having it. At this rate I am almost definitely getting an S4 Mini, otherwise a Note 3 or G Flex would just be cramming a second tablet into my pockets.
Back to topic so many of these phones are quads now, even though there's nothing for the 3rd and 4th cores to do most of the time. Higher rez literally murders your battery outright save for the G Flex, and you can barely tell there are more pixels unless you get inches away. HTC's camera is probably still inferior but it should work much better than the One. It will be a tough sell, many people my age and younger are backing away from the distraction of social feeds wasting their time. And the metal case, neat I guess but not interested. It just does not excite. The S5 doesn't really excite either, which is why I'll probably go with a proven and cheaper device in this cycle.
Two cents closing...a mere MSM8930AB dual 1.7 with Adreno 305 runs all of my Play games lag free including Minecraft and Bards Tale at the native 1024x600, the Mega at 1280x720 is a tad riskier with the same chip. 2013 Nexus 7 is 30% slower single core performance in browsing and most apps, and the high rez screen holds down its faster GPU. Tegra 4 is the first good Tegra chip NVidia has made but it's going into a lot of poorly made tablets which is very unfortunate. Insofar as I can tell both the Snapdragon 400 and 800 are better designs than the 600, and the 801 should be great in any device unless they totally drop the ball.
I would therefore not get the full size S4, not any of the HTC phones at all, probably nothing from Kyocera unless I needed a brick, and nothing from Nokia or Blackberry in their current state. LG makes some crap but their G Flex is looking better to me, and Motorola's custom Moto X is good if you seek vanity. It's a small pool of phones worth buying right now.