IIRC model visibility is set to ENLARGED by the server. It is awesome fun, even if some of the MIRAGE pilots seem very new to combat sims. (Most Mirage pilots ATM won't respond to simple RAYGUN calls. Hell, at one point my flight lead got railed by another Mirage's magic while RTB, even after we locked him and called RAYGUN. Twice...) And it does not help that ATM "21" on RWR is actually the Mirage, and "UK" is the MiG.
The Mirages v MiGs server is great fun now, but after the 530/550 fixes, IFF and radar antenna slew are implemented, it will be a different story. But love it right now when flying as either side!