[wesk05]

If the difference is just reported subjective differences between different TVs displaying DV content and those two TVs are using different DV metadata routes - then I'd avoid any assumption of correlation meaning causation - the differences could be in DV performance and nothing to do with the metadata delivery system. It could just be that the Dolby result on some models is different to others. Unless someone is actually doing objective tests demonstrating a difference with DV test signals on a display that supports both metadata routes.

The difference being reported between "player -led" and "TV-led" Dolby Vision is likely due to profile limitations and encoding differences. Profile 5 if encoded with 12-bit PQ remapping is likely to look very similar to profile 7 "TV-led" rendering. If there is no remapping done, then profile 5 content is limited to 1000 nits.