It is now JetWar 1.2 compatible. A patch was released yesterday.
Indeed the point about pilot skill is justified BUT also the tactics and strategy of the respective Air Forces played a big roll. On paper, an F-4 Phantom is generally superior to the MiG-21s they were up against. They were more powerful, had faster rate of climb, excellent electronic systems and could carry a rediculous amount of firepower (though early and Naval models lacked cannons). Let's not forget the F-4 also carried a set of extra eyes and extra brain! The MiG-21s on the other hand, were more maneuverable but lacked the range and firepower (most only carried up to two K-13As, which were inferior to the USAF AIM-9Ds). Only a few models had cannons and the rest occasional used the GP-3 gunpod (which reduced top speed).
Yet in combat, the MiG-21 has a much higher kill ratio than the F-4. Why? It was the tactics employed by each side. Not only did the MiGs have a target-rich environment, but they were operating purely in a defensive role within their own airspace and with support of SAM/AAA batteries. The MiGs purely acted as interceptors, a role they excelled at. Initially Phantoms acted as big missile boats and relied on their fancy technology, which ended up being their downfall. Not to mention, when they got into a dogfight, they were usually outclassed by the MiG pilots AND even if they did manage to get one in their sites, early/Naval Phantoms lacked a cannon to finish the job! Let's not forget that the Phantom was used in multiple roles and whilst it was great at most of them, it was not a pure interceptor like the MiG-21.
You do see a shift later where F-4 pilots become smarter and start using diversion tactics to draw MiGs into scenarios which favour them but the NVAF caught onto this quickly. Even so, with some retraining (e.g. TOPGUN) and some rethinking of strategy/tactics, you do see the F-4s survival improve against the 21.
My summary probably isn't 100% accurate but if you do read over the literature, it does definitely support the hypothesis that pilot ability and air force strategy generally is more predictive in the modern arena of success in combat than fancy technology.