To me A16 bionic is already enough powerful. But if they fixed heat issues that will give us better battery LIFESPAN and time. I'm now at 85% battery health on my 14PM that I bought at day1. And I don't see any other explanation to this except that the phone by itself is a LOT hotter overall compared to say 13PM.
Which is funny because I remember them saying as part of the 14 Pro keynote that thermals were improved.