So if the radar range is 250km for KLJ-7A, then it outranges the RBE-2 AA radar for the Rafale.
Yes but even than as per some sources RBE-2 AESA already have 200+ KM detection range so it is also in its own merit is a very potent system. For KLJ-7A I believe 250 KM range is also associated to detection only which mean its tracking range should by in ~200 KM it seems very good and no doubt give us advantage and to an extent confidence to counter the advantage which IAF was thinking to gain after the purchase of Rafale jets.
Just imagine IF in few year down the line IAF get AESA radar of Rafale upgraded to ne GaN base REB-2 which I think will be the standard radar for F4-R standard. So in short it is cat and mouse game.