When I compare OTA to Dish on my Vip612, It actually varies as to the results. From a viewing distance, if you really look critically, only sometimes could I say I see a difference, and then only on a closeup of a face, and we are talking an extremely slight difference even if there is one. Other times I cannot see a difference. If I stand up close, more often I do see the OTA ever so slightly more sharp than from the receiver. But even then, not all the time. And as some have mentioned, not all OTA is equal. My OTA NBC channel is consistently sharper than my CBS for instance during live programming. That is more noticeable than the Dish/OTA comparison. Overall, if you tell me Dish has less resolution or whatever than OTA, I can't dispute that with facts, in fact I might agree. But to my eyes, from a normal viewing distance, I just don't really see a difference.