When you eliminate all other variables (like the screen) you get the 30% difference between two chips. And that is a huge difference. If you use apps which rely heavy on cpu, you arent happy to see such a huge difference between same two phones depending on the chips. You can always ignore it by saying, that for majority everything is ok... But it doesnt change the fact that there is a difference between iphones. For sure the phone isnt gameboy, and the phone isnt a tv either, so dont play netflix then. It is not a computer, so dont run adv. calc programs...
I dont know what you do with your phone but some e.g. play games alot and if you need to charge the phone more often because of the chip, you arent happy to participate another lottery when buying a new phone.
My point wasn't that I never play games, or never watch Netflix, or never run calc programs. I don't subscribe to, it's all or nothing, point of view. The iPhone is a computer, that does multiple things and not a dedicated game machine was my point. As a tool to doing these multiple things, the chip difference falls into far less significance to the vast majority of users, the vast majority of time.
I understand your opinion, and see it as a purist point, where you desire the best from each individual component. Nothing wrong with that desire. Since their is variability in performance of the battery, screen, radio chips, GPU, and SoC. I don't see any way for anyone to receive a phone with all these sub assemblies maximized at the top end of their manufacturing variability. Everyone is going to get a mix of performance. Being ignorant to the other components variability does not mean it isn't present.
I have seen no tests to isolate the other components in an assembled phone. Being the pragmatist I am, I also have lingering doubts that the one geek bench test is truelly representing the real variability users will see in daily operations of the chip. There have been some users that have exchanged phones for various reasons other than chip and have reported that their Samsung chipped phone evidenced better battery life than their TSMC chipped phone. This makes me think the chip is not the sole nor overwhelming player in some instances. Again pointing to multi component variability.
In the end I have no desire to prove you wrong in your opinion. You make some valid points. And from a purist standpoint it would be nice to receive the best performing, in all aspects, components in every phone. I don't see how that is practically possible, and choose to emphasize the overall performance of the device. When I think of the signal location and use variability presented by how each phone is being used, this further clouds trying to attribute performance and battery life to a single component.
iPhones have exhibited an interesting attribute. That the synergy of the entire system seems to outperform the technical specs of the individual components. Over and over again other phones have better numbers on paper for a given chip or included ram memory. Yet when looking at performance the iPhone either surpasses or comes amazingly close.
When I do something with my phone that uses up more battery more quickly, I plug it in sooner and charge it up. For me the normal operation of how I use my phone is not impacted by which chip I have. It's as simple as that for me. I don't even think about the chip, any more than I think about the power draw due to my location to cell tower, or need to turn up screen brightness in daylight. I just do it and go on.