If anybody wants to make uninformed opinions on the routing, in this case, they really should have educated themselves from that previous thread to realise at no point does the LAX-LHR routing put you 'out in the middle of the Atlantic'. The route takes you well to the North bypassing YYZ, YYL, Gander/Goose, emergency diversion airfields in north-eastern Canada, Greenland, Iceland and northern Scotland. Even with a second engine failure, at any stage, even on the same side, you would then be in a situation not dissimilar to a 777 with an engine out.
I would have no doubt about which aeroplane I would rather be in!