about AWACS i disagree, well i dont know about the PLAAF but i do know about the PAF and it has nothing to do with winning and lossing designs, there is no way Pakistan would be buying something from China which has deficiency’s, infact i doubt China would even sell a lossing design to Pakistan as Erieye is already a formidable AWACS aircraft, PAF knew the capabilitys it was looking for so China knew the level of sophistication it had to achieve for a sucessful order
the reason why PAF got rotodome was simple, because thats what they needed having already operated the Swedish Erieye which is a balance beam
also this one, KJ-200 suffered major set back when in 2006 one of them crashed, so balance beam was out of the question for export to Pakistan as China was reluctant to export balance beam until they solved the issues with it therefore they turned to rotodome on a modern platform
the requirement for Pakistan Air Force was tall order, it had to have the range, endurance and detection which fitted PAF doctrine
also ZDK-03 has the ability to switch its modes, for when its doing maritime patrol to when its doing ground search, which allows it to perform many different roles in many different threat enviroments, in addition with rotodome you can provide 360 degree cover, for balance beam that is inherint operational drawback, it could not and would not meet the requirments set by the PAF
once the operational requirments were evaluated, it was then decided to reduce the Erieye order to just 4 units, as the ZDK-03 was suffcient
as to why PLAAF didnt buy one, well i guess they have thier own requirment, which i think no one really knows