Well, I'll grant you that it looks like a touched up photo*, but I still prefer it blurrier than the Enterprise considering the distance.
*Like they took the original shot and then manually fixed it to remove all the telltale artifacts of it being low-res. Smoothing out textures and re-doing lights.
Edited to add: A manual clean-up on it would also explain why the interior bay now has a solid green background instead of the X shape that is actually there on the shooting model. Someone who didn't know any better done goofed?