[Gregstrom]

With starting HP of 12 then yeah, you might expect a lower survival rate. But... say 1 commander luckily survives 2 arrows and is killed by a third. One of the others is very likely indeed to survive. The number of survivors is certainly within standard deviation because of the small sample sizse.

Of course, if any of the commanders had luck, air shield or twist fate (S9 bless and shroud) active, then suddenly the numbers look perfectly reasonable.