Aren't they both just differen't variations of the same lie? The only difference is the scale on which their impact on humanity is measured. That, and the fact that the bible can exist without the WT, but not vice versa.
But at the end of the day, what's the difference between claiming to be the inspired word of God, or the one true religion? They both involve presumptuous men invoking the name of an invisible being to, a)Command subservience from other humans, and b)Justify their own abhorrent beliefs and actions.
I'm not trying to exonerate the WT, by any means. They have blood on their hands, as does any group or person that controls others, and then washes its hands of the consequences by claiming divine guidance. But without the bible, such people wouldn't exist to begin with.