If their panels weren't performing up to QLEDs usual standard then I would expect RTINGS extensive testing to pick up on it, but it doesn't look like they've no

If their panels weren't performing up to QLEDs usual standard then I would expect RTINGS extensive testing to pick up on it, but it doesn't look like they've noticed anything amiss. They reviewed one of the models mentioned in the OP: https://www.rtings.com/tv/reviews/tcl/6-series-r655-2022-qled https://www.rtings.com/tv/reviews/tcl/6-series-r655-2022-qle...