The story that old Sergeant told me was, two staffs were given a scenario problem to solve by their commanders on Wednesday afternoon to be completed by the following Monday. The American staff got up early Thursday morning, stayed late that night, got up early and completed it and presented it to the CO at Lunch. Then they went home for a long weekend.
The ROK Staff got the same problem on a Wednesday. They stayed up all day and night Wednesday, Thursday, Friday, Saturday, and Sunday...and still didn't have the scenario solved on Monday.
The only thing that would be in South Korea's favor, is that the North Korean Army hasn't seen any major combat in 70 years. All those Generals with medals going down the front of their tunic to their legs

Sure didn't get them for anything done on the battlefield. All the North Korean officers advanced through their loyalty to the Kim dynasty.
Though the North does not have a technical edge, the north has a numbers of troops edge - 1.2 mil versus 500,000 for the South. China did not have any technical age in Korea in the 1950s, but they had an overwhelming numbers edge. If N.Kore were about to be defeated would today’s China enter on their side as rhey did in the 1950s? No on knows.