I would have thought the aircraft design should have anticipated engine failures like this and that the issue involving the inability to shut off other engines and or the loss of hydrolic pressure in this incident would be more problematic for Airbus than RR.
The design does consider such things under the regulations. Some of the design assumptions take into account the muliplicity of means to shut off the fuel as well as the means to have sufficient control of the aircraft to still land .
Seemed to work in this case