Return of Reckoning

What does winning scenarios have to do with RvR lake captures? I fail to see the logic in that. But im sure your right and im not, cause i have no clue. So first you cap all BO's in dwarf and then win Gates of Ekrund.... Or Nordenwatch or whatever. A SC win corresponding to the correct RvR lake ...

Hi Sorry if this info is readily available but since I cant find it im probaby dense or just lazy. What exactly does it take to capture a T1 zone? Sure, all the BO's but that doesnt always seem to do the trick... Do you also need to kill a certain amount of enemies in the RvR lake or something like ...