Allways been difficult for yours truly to figure out why many people solely base their safety focus on whether you are flying a two, three or even four engined plane on polar tracks or above other hostile territory. It doesn't make a big difference if you experience an uncontrollable fire onboard - you have noplace to go!
Rainboe, the majority of my fellowpilots, does not worry to much about the fact that BA268 carried on three engines. What they are concerned about, is that they pressed on, and had to divert to MAN with possible less than reservefuel available, and declared an emergency.
VK