I think that since Pac-12 is a "national" network, it would be misleading to claim that Dish offers Pac-12 in HD, if the only content in HD are the live football games and maybe select live basketball games. That's how they treat RSNs, as stated above. But what if you want Pac-12 because you're a big water polo fan and are stoked because Dish offers Pac-12 in HD so you can see a lot of the best water polo school match ups in high def? You'd get screwed into ordering Dish for something they claim to offer, but really don't.
My point, to put it more succinctly, is that if they treat the HD like they do the part-time HD RSNs, then they should not advertise that they offer the Pac-12 Network in HD unless they include an asterisk that specifies that less than 1% of the total content is actually presented in HD. Am I off base here? Don't get me wrong, I'm very happy to have the network and the football games in HD. But I think it should be on the same terms as other national HD channels like BTN.