Basically we know twins are no safer than singles, but what you really need is a single and a twin doing exactly the same job in the same conditions to prove the case.
Authorities never compare like for like, most singles do all the dangerous work, initial training, load lifting, low time pilot hour building etc so the accident rate is bound to be skewed.
Only once you have experience do they let you fly twins, so that also changes the stats in favour of the twins.
That's my pennies worth, have a nice debate
