You can try this for demo, once u get past blade runner, almost all others will be ok , lotsa Pj torture scenes in this one
But I agree, what we really want to achieve is to max out the dynamic range , not really about how much lumens each PJ is capable but more on how big pipeline of the dynamic range and how well the tone mapping engine maximises it
Gavin here is one video from kris deering, well explained on your question above , zoom in to about 37mins
He takes into consideration the viewing environment and how the eyes adapt when there is a sudden jump in light output . If you had used an Oled , you will understand what he means by that. That’s the problem most were complaining in xtremeplace previously with HDR when they first got their OLED few years ago , me included for the subtitles were also extremely bright. That’s the problem with static tone mapping, constantly bright throughout the entire movie
Zoom in again to 42mins and kris explains dynamic range is what matters