Sunday Ticket exclusivity has nothing to do with Directv. It has EVERYTHING to do with the NFL. It's the NFL's content and they decides who can have it. The NFL put it out there, Directv paid for it and now has it.
The bottom line is if Comcast has an issue with Sunday Ticket, then they need to be complaining to the NFL not Directv. This is why Comcast trying to link these 2 issues is just silly.