Airbus ancestors may have been the De Havilland company and the Comet may well have been powered by Rolls Royce Avons but the reson the comet crashed was metal fatigue around the square passenger windows. Subsequent design of the windows into ‘Ovals’ cured the problem on the Comet 4. The engines had no bearing on any of the crashes. in fact the only problem with the RR engines wasthat they were too powerful (having been developed as derivitives from combat aircraft engines).
Lets not get away from the fact the A380 is a fantastic aircraft and far surpasses anything our colonial cousins from the US can achieve.
Happy New year