Agreed, but Alaska's belt was only 9 inches, Scharnhorst would probably penetrate it before Alaska could do the same to Scharnhorst.
Checked the performance of the 11 inch and 12 inch guns on Navweapons. Looks like the 12 inch was an excellent weapon and much better than the 11 inch (Navweapons, if I read it right, gave the 12 inch a better penetration than the DoY's 14 inch guns at similar ranges), but I still think Scharnhorst had a significant edge being more heavily armoured.
If I knew what game Larry was using, it would be good to check it out. Sadly, my ancient copy of Fighting Steel, updated with the NWS patch is long gone.