Its not a console port as such, but the limits for the console have definitely had a knock on effect for the PC, the game seems to have been focused laterly on "what can fit on a sensible amount of media for the xbox/ps3" and "what looks good on a 720p 40" TV viewed from 6+ foot". If you play it on a large screen, especially at typical console resolution, at a distance it looks stunning. Even another 5gigs of texture data on the PC would have alleviated the most noticeable low res textures. Which sucks a bit as the original concept of the megatexture system was so that artists could go in and develop the product at super high resolution and then the engine would crunch down to the target platform automatically without having to keep in mind the limitations of the various platforms.
Also on a lot of AMD cards it seems to look even lower resolution than on nVidia cards, not sure why but they seem to have far more compression artifacts and less texture detail - it may be due to the fact that the transcoding has a set ms budget which has a direct impact on the quality rendered that frame and AMD drivers seemed a bit slow at the transcoding also resulting in more noticeable texture popin to.
Also on a lot of AMD cards it seems to look even lower resolution than on nVidia cards, not sure why but they seem to have far more compression artifacts and less texture detail - it may be due to the fact that the transcoding has a set ms budget which has a direct impact on the quality rendered that frame and AMD drivers seemed a bit slow at the transcoding also resulting in more noticeable texture popin to.