Sunday ticket feeds are MUCH MUCH better picture than local channel feeds (probably due to multiple iterations of compression). Also the Sunday ticket channels don't have the station ID bug at the top of the hour. They have network commercials so I'm not sure if they get the feeds directly from the stadiums (unless they add those there but I wouldn't think that). They also have "you are watching NFL Sunday ticket" when there is a local ID slide. I'd wager feeds from CBS and FOX, but I'm not necessarily privy to that info.