Lu,
Won't start a technical discussion with you, as the outcome would be akin to Burkina Faso going to war against the US. Short and bloody.
However, bringing in the 737 in an ETOPS discussion is pretty far fetched. A more appropriate a/c would be the 767, or which less than 1000 has been built and not all of them ETOPS equipped / certified and with 3 different engine makers and probably several sub-types. So, assuming around 1/2 the 767's are ETOPS and 1/2 of those operate with, say, the PW4000. That'll add up to around 250 of that particular type. Each flying an average of 10 hours
pr. day, that's roughly 1 mill. hours/year for the entire fleet. And with an inflight reliability of 1-10 9 a failure will be a most uncommon affair. And losing both engines on the same a/c should be more or less impossible, from a statistical point of view. And finally, the design of any 2 engined ETOPS aircraft has allowed for the aircraft to operate safely on 1 engine for up to 180 minutes.
Please don't kill me over the exact numbers, this should only serve as an example.
In short, I'd feel perfectly safe crossing the pond in any 2-engined ETOPS aeroplane, be it a Boring or A-bus.
Any ETOPS drivers around who's experienced an inflight shutdown and consequently diversion ?