J.T. we all agree that energy is the key to survival. It well depends what kinda WS hits and at what moment. Too many uncertainties. IAS is meaningsless as speed fluctuations are too big. That's the reason why airbus created the magic tool SRS which keep a min level of energy in case of WS encounter. No need to increase VR Alpha Prot simply doesn't allow airbus to stall in case of full stcik back and that's what we do in case needed. That's pretty much one can do with full thrust.
That makes the difference in level of sophistication between airbus and boeing.