the record of JWs refusing to kill each other as other religions do is impressive - SBF
Actually their neutrality is not impressive it is shameful.
When JWs opted out of WWII that was morally reprehensible.
Fascism is evil. It could only be defeated through war. Chamberlain proved that beyond doubt. The moral thing to do would have been for JWs to fight against the Nazis regardless of what country they belonged to.
A meaningful comparison is not between JWs and the Christian churches of Germany, but between JWs and the Christian churches who supported the war effort against Hitler.
The churches who supported the Allies were morally superior to the cowards who hid behind neutrality.