Thanks Geronimo.
Couple the headstart that YES has and the fact that SNNY is partnered with not one, but two cable cos, the fact that they're probably going to have to shell out $ for a pitching staff starter before the trading deadline, and the cost of a new ballpark, I expect a lag in what SNNY does in comparison to YES, especially since the Yankees have deeper coffers.
If you're not a hardcore Jets fan, SNNY loses most of it's relevance from November to March, while YES has Nets games, home games in HD.
I do agree that they eventually have to start that HD truck rolling to away games and being less restrictive as to where that HD feed is allowed. I'm in the NY RSN area, but the only time I see the Mets in HD is unblocked ESPN games and the postseason.