Thermal Scope Reversion?

So in MW2, when using the thermal scope, why is it so hard to use on a snowy map? But is the best thing to use on afghan the desert level? When playing with thermal on derail the snow causes the thermal scope to have a white out effect but on afghan it is clear as day when looking at the terrain. This makes absolutely no sense whatsoever. If this was a real thermal scope, on derail the snow would appear dark grey or black because it is so cold. But on afghan the terrain would light the thermal scope up like it was A Christmas tree. The game is backwards in that regard and is really frustrating to think about.


- Posted using BlogPress from my iPad