I would prefer also the gun produced by Sony. Less complicated for me"Adaptable for both Japanese and Chinese ammunition"
Seems like it would sell better than its competitors given that it can be converted to use existing ammo quite easily. Would be profitable if China and Japan have a conflict with each other or in need for a lot of guns as they both could use the guns to supplement existing weapons.
Seems limited in its ambition though seeing as its only difference from other guns is ammo interchangeability and a three shot grenade launcher attachment.
Matsushita seems to be trying to get a lightweight gun that shoots flechettes according to the picture high capacity + rapid fire + low recoil + probably has armor piercing capabilities given the flechettes.
Probably more expensive that the other guns to produce, probably going to have issues regarding maintenance due to lightweight materials + expensive ammo due to custom flechette ammo
Fujitsu is using intermediate ammo so probably has decent recoil and acceptable range for modern warfare + focus on scopes allows for advantage during nightime engagement and would really help in the forests/counter-insurgency that Japan often fights in.
Probably really heavy compared to the other two not to mention that its main selling point (scope) will either make or break the gun.
Interesting sub-system, not sure how they would implement the costs and benefits within the TNO system of other CPS States buying the gun.