Your data on this is inaccurate....
OK, I was speaking for the Mirage 2000 which I know can only fly remain ice-free if RAT is high enough and alpha is low enough - which basically means high airspeed. Can Typhoon really remain ice-free at the alpha required to maintain (say) 200kts? If so, how? I can imagine an F3 might stay ice free a bit longer at low speed with the wings swept forward - but can they stay ice-free indefinitely at mid mach levels in heavy icing conditions like civilian aircraft?