Evidence 1 : During electronic training MACE XIII (I'm not sure about the "XIII") Rafale was the sole that fliew over a S300 without beeing track. Even dedicated F16CJ can't..... And All the others were virtualy destroyed, including Gripen.
Evidence 2 : Rafale came first and flew over Lybia without problem.
Evidence 3 : In april 2018, Rafale fired SCALP missile on Syria, along GB and US fighters. Russians in Tartous admit not having detected the french fighter wave.
And some other evidence, like a famous training between GB EF2000 and French Rafale, where the GB pilots were unable to have a fire solution. Since that and another famous training in Corsica between these two birds (7 to 1 for Rafale against EF !!!), GB refuses to train A to A against Rafale.....