There are a couple common features between Turkish 1951 and Asiana 214:
o Boeing moving throttles, with inadvertently disabled autothrottle system
o Approached the g/s from above
o Three people in the cockpit - one of them a 'safety' pilot
o Despite six eyeballs, very late recognition of airspeed/altitude awareness
This seems to be a witches' brew of factors, none of which individually has been a problem over the decades. Rather than isolating them, let's look at the synergy they create when together.