Yeah that was exactly what I expected.
Sadly, to appreciate it and enjoy a game, that game should be optimized to take in account the features offered by the hardware, and not developped thinking about monitors and TVs where “Black” is actually grey and contrast have actually higher settings dued to “all thing look greyish” effect of a normal TV or monitor.
Let me explain: think a sunny landscape image on your TV is 100 and a dark cave is 0, well with a system like the one you have you can appreciate a real image of a rainforest with sulight hitting tree’s foliage for example.
A game designed to use this capability will look beautiful on your TV.
A game designed on a system where the max level (its “100” level ) of light is = to your 75 and the totally dark (its “0”) is equivalent to your 25, when running on your system will look with too less contrast and brightness to distinguish something during the darkest night because its “black not really black” will be remapped to level 0 instead to level 25 wich was really intended.