[...]
Desktop users would have higher expectations
That is so true,
I saw many decent games get very bad comments on steam greenlight because of their graphics style.
For desktop games the development seems to go in the gameplay (-) and graphics (+) direction.
(Just tried out HoMM VI today and was highly disapointed, and that game was from 2011).
It is interesting though that there are more "find stuff in a picture" games for the desktop PCs on the sales shelf, than AAA titles
(At least here in germany)