I believe that Microsoft actually does emulate the 360 [0] [1]. But compiling the game allows them to deal with some subtleties and also provide upscaled assets

I believe that Microsoft actually does emulate the 360 [0] [1]. But compiling the game allows them to deal with some subtleties and also provide upscaled assets where possible. [0] https://emulation.gametechwiki.com/index.php/Fission https://emulation.gametechwiki.com/index.php/Fission [1] https://www.ign.com/articles/2017/10/23/the-untold-story-of-xbox-one-backwards-compatibility https://www.ign.com/articles/2017/10/23/the-untold-story-of-...