This chart gives you a more better idea on the latest(2018) import/export breakdown data.You mean like the article I posted about SAAB stating that this is actual more about synergy effects for their Gripen E? Or the Swedish defence minister stating it's about "exploring" and not "committing" to the developement to next gen fighter capabilities in that MoU.
GE and RR all have the overwhelming majority of developement share in new turbines projects.
In that paper released by the SJAC members, it's clearly stated the big deficit between export and import of engine (parts). Japan, as later comer, did an excellent job of etablishing itself as crucial partner regarding subsystems and components but they lack the system house capabilities regarding aircraft and engines.
It states that Japan exports a total of 393,101,000,000 yen in engine parts and imports 507,112,000,000 yen which includes fully assembled engines.
In terms of other components for aircrafts both fixed wing and rotary wings, Japan exported a total of 435,600,000,000 yen while importing 240,565,000,000 yen.
The gap in import/export is fully assembled aircrafts both fixed wing and rotary in which export 809,000,000 yen while import is 481,195,000,000.
No the only large difference is in the fully assembled aircraft division which is totally understandable but in the engine and other components Japan has a very nice balance.