It's really not comparable to the S5 despite those stupid charts and you can't just assert that they make the phones cheaply without backing it up. And if you're going to say that Apple makes their phones as cheaply as possible, than you might as well say everyone does, because there is no difference in build quality from iPhone to LG, HTC, Samsung, whoever else. Remember that it was Samsung who used to use plastic (which is super cheap surprise) and then changed to aluminum and or glass, following a certain company in that regard.
Naturally all companies make their products as cheaply as possible, if they didn't the shareholders would get rid of the CEO very quickly. And you are right, the s5 has a brighter AMOLED screen with higher pixel density and a better camera than the Apple does, it is not equal just comparable. Apple didn't want the added expense of a watertight headphone jack and so they just got rid of it completely to be able to compete with the ratings on the S5 (which has the more expensive watertight jack). If my phone back got damaged and needed to be replaced, I'd be glad it was plastic (it's actually a very durable nylon and plastic resin) and not metal. The backs are so easily replaced with any number of aftermarket backs made from metal, plastics, or even carbon fiber I don't see it as a bad thing when it allows me to swap batteries when it gets low and I want to keep using the phone and can't charge it right away or replace a bad one in a couple years, I see it as a positive and never liked the cold feel of a metal backed phone personally. I generally replace the backs or put the phone in a case anyways so it's not a consideration when comparing value for me.
For a phone with, as you pointed out, no better build quality and fewer features to charge twice the cost, it should be a no brainer which is a better value.
I don't expect you to change your mind and suddenly see the light, but what I am saying is all out there for you to research and see for yourself. If you love Apple and just buy it because of that love and pay no attention to other factors, that's fine, in fact it makes me money as an Apple stockholder, so go right ahead and keep transferring money from your account to mine. But please don't insult my intelligence by saying Apple has a better product and is worth the cost.
iphone 7 plus lacks the heart rate monitor (which some don't even use, I do before during and after daily workouts) lacks the brightness and pixel density (although the screen is slightly larger) doesn't use AMOLED tech, lacks standard hdmi ports, headphone jack, doesn't include Pedometer, Hall, Gesture, Step detector, Step counter sensors, lacks notification service lights, iphone plus does have Cell ID, Wi-Fi positioning that s5 doesn't and depending on how much you want to be track-able when carrying your phone this is either good or bad, and the 7 plus msrp is $969.00. You can get a brand new unlocked S5 for $250.00.
This is not the complete comparison by any means, just some points that I noticed off hand. The complete comparison is
here I found the S% screen brightness stat from
here since the other comparison left that out and this site did the actual testing and didn't rely on numbers reported by the companies which can often be skewed.
This isn't anything personal, and as I said I personally hope everyone buys Apple's products and lots of them, but I also like to be fair.
Just sayin'.