Speed. Kuzgun-KY is a cruise missile that approaches its target at supersonic speeds(I think ~1,2/1,5 Mach) and so it is very difficult to escape/engage it. OTOH, UMTAS-GM-1/2 will be a missile system with large blades for high maneuverability, flying at around 0.7/0.8 Machs max, even performing...