Sadly using Picdelamirand-oil 80kt +wod numbers. You may be right with the minus -40kt, after taking off and going backwards, tail first into the water.100kt Stall? Rafale proved to be able to stay maneuvrable at far far less speed....
Caractéristiques générales du Rafale, performances, manoeuvrabilité, endurance et ravitaillement en vol, commandes de vols électriques et évaluations.omnirole-rafale.com
Google said " Launch and recovery of aircraft, A Rafale fighter jet makes a catapult launch on the flight deck, where in two seconds the jet goes from 0 to 250 kms per hour, aboard France's flagship Charles de Gaulle aircraft carrier March 28, 2011."
My maths say that 250kmh is 135 kts plus WOD. 80kt is only 55kts slower.