For a start QAN S/H, the VA aircraft in LA suffered an engine surge, not an engine failure.
2ndly, a 2 engine aircraft has a bit less than half the chance of suffering an engine failure when compared to a 4-engine aeroplane. Added to this is the requierment for a route/distance limitation, higher standards of inspection and airwothiness for EDTO, additional systems redundancies...
The result is that a new 2-engine aeroplane operating under EDTO is just as safe, if not safer, than a 4 engine on a similar route.
Your lack of knowledge of this sort of thing is a little bit disturbing if you are in airline management, as I and many others suspect you to be.