There's more than one way to dilute someone's voting voice:
The justices split 5-4 across ideological lines in ruling that a three-judge panel did not properly consider complaints that state officials illegally packed black voters into too few voting districts. Writing for the court, Justice Stephen Breyer said the lower court should have reviewed claims of racial gerrymandering on a district-by-district level, not just statewide.
“The Alabama and North Carolina redistricting cases involve different questions of law, and legislative leaders do not believe today’s Supreme Court decision impacts the North Carolina case,” Phil Berger, N.C. Senate president pro tempore, and Tim Moore, the N.C. House speaker, said in a joint statement.
Nice try, BergerMoore. The Justices' concerns in the Alabama case, and their subsequent dissatisfaction with the lower court's ruling, are both very pertinent to North Carolina's redistricting mess. Here's an excerpt (fat pdf) from our own Supreme Court's flawed opinion allowing the districts to stand: