Lumix ZS70 ZS80 Viewfinders

[MJ2020]

I'm looking into buying one of the newest Lumix with EVF. The main difference between the ZS70 and ZS80 (TZ90-TZ95) is the viewfinder resolution: 2330k vs 1166k dots.
I have no idea how these viewfinders look, so perhaps someone can tell if the increase resolution is helpful or just marketing. Are these viewfinders bright? Do they show the histogram?
The reasons I'm buying this camera are: small size, tilt screen, RAW, live histogram and viewfinder.

Thanks.