Ignoring burn in, cause it's not "still an issue".
The Over saturation of Colours that Samsung phones have is actually a software option that can be turned on or off in the settings. On "photo" mode, Samsung's current (As of the S6) AMOLED's are the most accurate displays, and regularly rated as the best mobile displays in the business.
Samsung just defaults their phones to the over saturated mode, and doesn't actively tell users that you can turn it off. You can find this option in the settings menu, under "display", under "Screen mode". With 4 colour options
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Multi-Touch on a phone. Sure, But they purchased the company that was doing it. Apple did not invent multi-touch. The company that was working on Glass Capacitive based multi-touch was named FingerWorks. Once Apple purchased this company in 2005, they ceased all other products that involved gesture based systems, and kept the remainder of the tech exclusively to themselves.
64 bit processors - Sure, Apple was first, but this was also not created in a vacume. The entire industry was already proceeding with development of 64bit CPU's. QualComm had already been rumoured to be working on ARM designed 64bit CPU's. Apple did surprise them though by getting their ARM based 64bit CPU out first.
3D Touch- I'll admit is kind of cool. Haven't looked into much, but "pressure sensitive" interaction isn't super new.
AI on Phone: There is no AI on the phone. So not sure how you mean. In fact, Mankind has yet to actually invent "AI". There has been no legitimate software that has passed the Turing test. If you are referring to Voice dictation and personal assistant? There have been previous version of this tech, which Apple built upon in a nicer way, But has since been eclipsed by others. Like most tech, Apple is not first, They are just really good at innovating refinement.
Touch ID: Not an Apple Invention. Touch-ID was invented by a company called AuthenTec. After a couple of mediocre attempts on other smartphones to implement fingerprint ID recognition, AuthenTec set out to refine a better method, that was better and more reliable. AuthenTec had been working on this fingerprint reader and had been rumoured to have potential deals in place to include their sensor in Samsung, and Motorolla devices. Apple purchased the company outright, and kept the technology exclusively for themselves. This forced Motorola to ditch the fingerprint sensor for that generation (That's apparently why Moto's have the dimple in the back. That was where they were planning the sensor). And Samsung had to resort in the meantime to previous technologies and start from scratch on designing their fingerprint sensor.
I'm not saying here That Apple isn't good at what they do. But don't start giving them credit for stuff they actually didn't do. One of the biggest fallacies that Apple has helped portray is that they are grand inventors. They are not inventors. They are innovators who have taken existing technologies, and packaged them in such ways that look great, and are usably by lots of people.
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It will be significant, but more likely that most people won't really care why. They will just say "it looks better than before!". Similarly, most users of the iPhones say 'its smoother than before'. They don't generally know the exact technological reason why. The numbers "1gb v 2gb" will probably inspire their eyes to glass over and think about cats and their next reddit post for Karma.
All they know. is This generation is better than the previous for what I want to do.