Hippo....
Something that has to be factored into the equation....Air Log had a rash of engine failures a few years back (seems that distinction rotates amongst the GOM outfits) due to contaminated fuel. That would possibly do in a twin as well as a single.
Try as you might....you will not be able to sway the jury I fear. After all, the deck weight of some of these twins is so much greater than a single....along with all that complexity to cope with.