Actually in mobile devices extra speed can also equal better battery life. It’s basically called the race to idle.Apple's hardware continues to be impressive, but most users probably care most about the power efficiency.
Comparing benchmark scores has become a bit of a pointless exercise, really, when we're completely honest. They are all overpowered for what you really need in a phone.
As an example and completely made up numbers here but if you have a chip that draws 2,000mw under load and takes 10 seconds to render a webpage. That’s 20,000mw consumed.
Now you have a faster chip. It might also draw more power so maybe 2,500mw under load but can render that webpage in 6 seconds. It’s going to consume just 15,000mw to do the same work.
Obviously if you use this extra power for games and max the SOC out you’ll have higher performance for a shorter period of time on the second chip. But outside of gaming, pretty much everything you do on a phone can benefit from getting the SoC to idle faster. A small power increase in the chip to do that can actually still result in better battery life.