Okay, the final word from MC is that once clarifying with both Pace and UEC, it was determined that only the UEC model is capable of 1080p output.
However, neither device is capable of decrypting a 1080p signal, so the point is moot.
The only way you would benefit from the 1080p output of the UEC is if they allowed/activated the 3rd-party connectors, which they won't. (For now, in my opinion.)
So to clarify, yes the UEC model is able to output a 1080p signal but is unable to receive a 1080p signal other than from the 3rd-party connectors (USB/Ethernet).