HDR brightness is a PART of HDR viewing, but contrast remains king. This is where the OLED models simply stomp on most of the competition.
It's not for everyone, and it's not for every room. But, just looking at one metric to determine the quality of a display is just.. silly(?). No reviewer goes with a single metric in their reviews. They judge motion handling, black level, shadow detail, image uniformity, color accuracy, and a LONG line of other consideration before making recommendations.
If you just want a nice bright punchy image for bright room viewing, then there are a number of models which perform well, which should never be considered because they screw up some of the other aspects of image performance.
But, it doesn't suddenly make any OLED TV bad because it doesn't get super bright. It just means it needs to go into the right room.
Always compromises, which is why review sites such as RTings give the ability to sort by a lot of categories.
OLED leads the list in a lot of different viewing options. But, brightness certainly has never been one of them. Wait until micro LED hits the market!
The best TV we've tested is the Samsung S90D/S90DD OLED. It's a fantastic TV with a great selection of extra features and incredible picture quality.
www.rtings.com