I have a unreserved belief in the level of self-deception people are capable of (i.e., I think that they may 'know' many things, but for exactly the same reasons WE were blinded to realsing what those facts MEANT, many of the uper hierachy are similarly blinded to a realisation of what they know means.
However, the figure of 10,000 is reasonable I'd guess. If you are genrous and assume half would have died anyway, that means the WTBTS have killed more people than any other religious cult.
It's larger than the casualties of Jones Town and Wacko, the Japanese Sarin gas cult, theose suicidal UFO nuts, that Nigerian church AL PUT TOGETHER.
By itself it's even larger than 911 death-toll