If South Korea could stomp over the North, they would’nt have called for UNSC sessions after their warship was sunk and after repeated provocations over the past 15 years.
A country which has an arsenal of ballistic missiles, NBC weapons, cyber warfare and supposed EMP capabilities is not 1950 style. If Saddam thought them something, it is that there is no point in trying to match the US or its allies in conventional capabilities. Sure the South and US will win any war eventually, but are they willing to pay the price??? They have shown little inclination towards that.