Some of these issues are a lawyer's wet dream, to have two completely opposing reasons which both explain the same result, because then the issue is no longer merit-based, it just becomes a medium to display their skill and gain personal notoriety. Certain data points, like crime data, are just that, and people can argue back and forth and they both walk away thinking they're right. Howeverrrr, the best metrics are the racial gerrymandering cases, because if one's perspective is that racial inequality exists, systemically, at least that position has the backing of state supreme court rulings, which usually ranks higher than some rando on the interwebs.