If there is one thing that would make the iPhone 11 phones "feel" unstoppable, it would be a 90Hz screen.
The iPhone 11 has a 60Hz screen, which is good. But 90 Hz screens are faster and smoother, and they have a big impact on how the premium phone feels. It's not necessary, but as OnePlus, Razer and Asus phones come with 90-plus Hz screens, Apple's iPhones (and other big-name phones like Samsung) are starting to look outdated, despite all the cool design and technology they have.
But I can see why Apple has not used the 90Hz screen. Screens with higher refresh rates can use more battery. Apple boasts better battery life on the new iPhone 11 phones, which more people might value over a 90 Hz screen, especially when the current 60 Hz screen is good enough.
For reference, "Hz" refers to "refresh rate." The higher the Hz number, the higher the refresh rate, which means that more frames per second a screen can be displayed. With a higher refresh rate and more frames per second, animations look like opening and closing apps, as well as swiping around an operating system and apps, smoother. It has a surprisingly large impact on how premium a unit feels.