Yes, 'technically' the R4 plays 4K media files...technically. In reality, at least on my setup, my 4K projects shot with the Sony A7Rii do not play on the Roku. It says 'loading' but never gets out of the loading mode. These same projects play fine via the USB input on my Sony TV. So I'm not even sure if that aspect of the R4 is of much use.Well technically the R4 would allow you also to play 4K media files that are not compatible with your TV as well. If you are deep into the apple ecosystem and don't care that it doesn't offer 4K then the ATV may very well be better for you.
Sent from nowhere
I'm getting the feeling this thing was rushed to market before getting a thorough QC.