The chart is clearly just a circle jerk over numbers, and fails to take into account actual application. I don't usually partake in these discussions, but I'm bored in class so I'll break it down:
Thickness - The iPhone X has a larger battery, screen, and more internal hardware than the S6.
IP Certification - The Galaxy S6 has no IP certification and the S7 was advertised as gaining the water-resistance back
Camera - The camera sensor in the X is much more advanced than the S6, with a much superior ISP as well
Display - The iPhone has more PPI than the Galaxy S6,
Processor - Core numbers mean nothing. The iPhone 6s has higher theoretical and applied performance of the Exynos 7420. The A11 blows even the latest Exynos, Kirin, and Snapdragon processors, especially in the GPU and Single Core performance area. It's estimated the Snapdragon 845 will finally meet the Apple A9 in single core performance, and that's the highest end Snapdragon. By this logic, the 8 core CPU of the S6 should have more power than a quad-core i7 because it has more cores, which truly is not the case in any scenario.
RAM - Android devices usually have more RAM because the system demands it. iOS devices run smoother and more power efficient with less ram compared to the Android counterparts because the system isn't demanding. Android devices don't have 4,6, 8GB of RAM because its better, it has that much because it
needs it for a solid experience.
Wi-Fi - The S6 doesn't support MIMO, and speaking of connections, it doesn't support LTE-A, 256 QAM, nor does it support Bluetooth 5.0.
NFC - The iPhone supports reading NFC tags with iOS 11 with an API for developers, so this point is just factually incorrect.
The Wireless Charging and Headphone jack points though, nothing to really argue with them.
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How it's also older. Should be more compared to the upcoming 845. The 835 was announced in 2016 and the first phone with it was the Samsung Galaxy S8 which came in March. It will be funny to see the reactions of Apple fanboys if the 845 is faster lol.
The 845 is expected to match the A9 in terms of single core performance, so multi-core performance (which will probably be higher since it's going to be an onto-core processor most likely), still won't be far off from the A11. Not to mention the GPU performance is heavily balanced in Apple's favor.
The Snapdragon 8xx series and Apple's recent SoCs are fiercely competitive, with Apple dominating single-core and GPU performance in favor of Apple, but multi-core performance in favor of Qualcomm.