Do you mean that the legacy of the strong chapter you'd still rush hard but think hard about putting her first because, chances are, she'll go to her mom's house? And the leg to the weak chapter you'd rush hard and actually rank her higher than the leg of the strong chapter?
If that's what your saying, I felt the exact same way when I was a collegiate. I have plenty of sisters where we'd find out they're a leg to certain houses and just think !@$% We'd be damn lucky if she pref'd us let alone bid match! But as I said, they're my sisters. So the Greek Rush gods shined on us those nights.