I think part of what bothers me about this cover (and other work of Land's, as well as some of Adam Hughes's and Guillem March's work) is the way it's coloured. And maybe the way it's coloured is attributable to the original pencils, but they often seemed to get this sort of ...airbrushed look to it. Like we're not looking at drawings of people, but instead polished and airbrushed images of women like you see in magazines and advertisements.
And oddly enough, despite that Land's work tends to lean toward photorealism a little bit, that airbrushed look detracts from any sense of realism for me.