User blog comment:Etindel/That did NOT just happen!/@comment-15843945-20130606194856/@comment-9788768-20130610183733

Of course the Northern Lands are worth more than the Iron Islands but only if Sansa's the only living Stark. As far as Tywin was concerned, Bran and Rickon were both dead and Jon was a bastard sworn to the Night's Watch. Then there was Robb with his army and his wife who had the potential of giving him an heir.

What I meant was that Tywin wouldn't have insisted on marrying off his only marry-able son to Sansa unless he was SURE that she was indeed the Key to the North...because Robb's days were numbered...because he had already made sure of that himself!