FS9 vs FSX. The pros and the cons. Flying the same airplane, Manuele Villa's Ansaldo SVA 5 out of my home airport Danville, VA.
All the bells and whistles are in FS9: FS Genesis 38-meter DEM mesh (LOD 20), Ultimate Terrain - USA, Ground Environment Pro, Active Sky 6.5, and Real Environment Pro controlling water textures and extended bumpmaps. Notice how smooth the frames are while capturing the video.
In FSX I have FSGenesis 9.6-meter DEM mesh (LOD 22) and Ultimate Terrain X - USA. Colors are much brighter, resolution is much better down low, the moving traffic is nice eye candy. The default water colors in FSX leave much to be desired. The new beta FS Water Configurator is a well welcomed utility here. Frame rates while capturing video are down to about 15 fps and you can clearly see the motion is not as fluid as FS9.
Head latency in FS9 is controlled using Active Camera 9.1, in FSX head latency is controlled by default in the VC.