Per Gordon and Davison, the first batches of the Su-27 were designated for the Air Defenses (PVO) before the VVS (tactical aviation would get them).
This came from the 1982 batch, and the Su-27P, which is slightly different than the S (P had Air Defense datalink like MiG-23ML, was not built with A2G capability), was produced and entered service first. If you don’t understand that, that’s fine, I could care less. Su-27S came after.
its cool and silly japan will have the best f-15 out of the box with better missiles/better radar.
not even america can be shining star with updates its like “its an american plane with an export, so ofc it will be better than america’s for updates to come” 💀