I may be wrong but I always thought that Christians generally believed only really bad people went to hell. If they simply lack a faith in God but live an otherwise good life being helpful and kind to others, they would still qualify for a place in heaven. Also, I didn't think other religions (maybe there are few exceptions) believed that God would come and strike down everyone in one fell swoop who didn't share their particular belief system.
On the other hand, JWs believe anyone who is not an active JW will be destroyed horribly en masse at armageddon, including their inactive JW relatives and regardless of how nice, kind, self sacrificing and loving these inactive relatives are. Yet somehow, the active JWs who are saved by Jah will not care about the horrific death of their nearest and dearest when the time comes because Jah will take away all pain and suffering.
Those WT illustrations of JWs with glassy eyes and huge satisfied grins on their faces as they look towards a bright light representing the New System while behind them is the death and destruction of an entire world, including their own kith and kin who may be crying out to them for help, are really creepy!!!
Yes, believe me in my mind there IS a big difference.