This gives SC a good ranking.
https://www.aaem.org/UserFiles/SepOct14MedicalLiability.pdf
This rates both states around $5-$6 per capita in malpractice cost for MDs. Both middle of the pack, with slight edge to NC, by that measure.
http://truecostofhealthcare.org/wp-content/uploads/2015/02/Malpractice-Rankings.pdf
This one also gives NC an edge
A state-by-state breakdown of medical malpractice suits
It's hard to find a clear-cut, direct state to state comparison, but my impression over the years has been that both N and
S Carolina have been generally considered better than average tort reform states, in recent years, or at least no worse than middle of the pack, certainly not the judicial hellholes of NY, NJ, PA, Illinois, etc.