The perceived black depth offered by the Samsung is vastly superior to the Sony since the Samsung has a 4000:1 contrast ratio, lighter matte grey bezel, and my unit did not suffer from obvious back-light bleed or glow. However, the Samsung automatically lowers the brightness in dark scenes, which is very noticeable when switching quickly between bright and dark content such as the game screen shots I use of The Order 1886. The fast brightness change can't be disabled, and the lower brightness reduces the ability to see all the details of some dark content. The auto-lowering brightness and VA panel black crush reduces the ability to see details in dark scenes slightly, but the automatic dimming was only noticeable when switching between photos or screen shots of dark content, and not when viewing non-static content such as a game, movie, or TV show.
Here's the same Destiny 2 Pyramid ship screen on shot on the Samsung, but this time with the lights off while the top photo is with my bias lights on:
Destiny Trials Of Osiris armor: