One aspect that needs to be underscored is that the JSF program is highly insular, having been underway under tight security (at least as regards things like stealth/EMCON and sensor fusion) for 16+ years and operating under the conviction that US technology in general and the F-35 in particular far outclasses the rest of the world.
what a load of tripe, the f-35 is the most uninsular plane on the planet with 9 nations embedded in the programme adding their tech