Lack of power.... brutal view. Have a Rainbow!!!
There is a definite reason for such dramatic changes {specifically the wall texture being completely different, power has nothing to do with such a decision when the replacement would be a larger texture file on a console, than the pc texture it replaces.)
I suspect a lot of the rework has to do with the NTSC color values of TV's not having the range of contrast an RGB monitor can support.
(I definitely see, some things that were altered, that is proof of tapering down performance. But this hardware is completely new and still in the development pipeline. So... if you have any experience... don't be so harsh with your judgement. Have a Rainbow. ~ "It Be Al-right." VW. Take care, she just needs some polish and wax. NTSC displays will never have been happier!!!)