We suggest you not be swayed by what "firstcoloredmip 1" is showing you. People don't play the game with the mipmap levels highlighted, and that should not be how you judge the quality of the image produced either. It does seem quite obvious to us that NVIDIA is going about the Trilinear and Anisotropic Filtering quite different in this game than what we were familiar with in the past and quite differently from ATI. NVIDIA has seemingly found a way to do less work doing Trilinear Filtering than ATI while producing an IQ that easily comparable with ATI's.