You might think all 4K discs have the same quality, but that's not the case. Recent releases seem to have righted the ship, and you see things like Dolby Vision included in The Fantastic Four: First Steps. What you'll find with a lot of older Disney discs, particularly the MCU, is that they don't have Dolby Vision. Sure, there are obvious limitations when compared to other 4K discs in your collection, but that doesn't mean these options aren't better than their Blu-ray counterparts. The only thing left to do is for Disney to release them -- and hopefully they come with a good Dolby Atmos track and Dolby Vision.