True. That is a difference. Nice comparison. Lets see if FSX addon stuff or freeware can help.
Here's a guy with a video on FSX at Hawaii with addons. Very nice video by the way and beautiful livery on the first plane.
http://www.youtube.com/watch?v=UHuwNCT966U
But Flight, at least this part of it, comes for free. So that's a big win. However, the rest of the world may be cheaper in FSX so far. Maybe MS gives us bundle prices.  :D

I couldn't find any FSX addon for that special mountain. Only some FS9 freeware.