The only advantages from this list that the S6 has over the X are the top two which are the thickness and the slightly higher water resistance rating. The rest are a mute point and are again just a fancy spec sheet to brag about when time has proven over and over again that these really don't matter. Let's see...
Camera - Mega pixels don't equal better photos. I thought we all realised this in 2017? And anyway, doesn't the S8 actually have a lower resolution camera (12MP)?
Screen - Again, just bragging rights. The people who have actually had a 'hands on' with the iPhone X have all praised it and said that the screen quality was amazing. There comes a point where anything over 400 ppi is perfectly fine and you can't see individual pixels. And doesn't the S8 have their screens set to 1080P as the default setting anyway? Not only that, but they have it set to 'adaptive display' which is the most inaccurate and oversaturated setting they have. Apple doesn't even have the option, they instead have theirs collaborated to be as accurate as possible out of the box without the user having to dig into the settings. Yes, the S8 has an accurate display setting but most users don't even know about this and don't bother changing it because they think that the adaptive setting is how it's supposed to look. It may make the colours 'pop', but it is still an inaccurate representation of images and video. For example; if you want to watch a movie how it's intended to look, or shop on Amazon and see the true colours of that shirt you want to buy etc.
Storage - Yeah, you kinda missed out the part where Apple offers that 256GB option there which Samsung doesn't. And this makes it look as though Apple has just caught up with offering a 64GB option when they've had it since the 4S. Also, yes you could argue that the S6 has expandable memory but it actually didn't with the S6 until they reintroduced it again with the S7 due to complaints. Anyway, expandable storage is inferior as it is slower and you constantly have to juggle between where you want to store stuff. I'd rather have everything on the device without having this worry, plus it's faster to access at that.
CPU - If there was ever an argument where "numbers aren't everything" then this would be it. An 8 core CPU that is still slower than Apples measly 6 core. Do we really need to go over this one? I think Android fans can admit that Apple has the superior chip performers in their iOS devices by a long mile at this point.
RAM - See above. All about that management.
Wifi - They've always been the same.
NFC - Wait, didn't Apple popularise this and actually move it forward? At least that is what I believe when they introduced Apple Pay.
Wireless charging - Yes, Samsung had this one first. Personally I don't care for it even though the iPhone now has it. People make a big deal about it in the tech community but I just don't see it as necessary until we have long range. That would be true wireless charging. I believe Apple implement this just to shut those complainers up.
Headphone jack - Ah, the elephant in the room. It's really unfair to compare this to a 2014 phone when the iPhone back then had it. Many aren't even bothered by this as some people like to think as proven by the iPhone 7 sales. Some of those people are actually glad because now they have their AirPods which they find more convenient and I've read many people say how they could never go back to wired. Then you get the disgruntled bunch that are more vocal and mainly complain on tech forums. Like it or not, wireless everything is the future. We had start at some point and Android handsets are beginning to follow suite. Also, are we really going to be complaining about annoying wired headphones in 5 to 10 years time? We'll probably look back and laugh at how we had to put up with such nuisance.