It's really quite easy to disprove the Christian Fundamentalist beliefs of judgment.
How many wars have Christians been involved in?
Let's take WW2 as a case in point.
There were both German Christians and
British & American Christians on both sides
shooting at each other.
According to the Christian Fundamentalist beliefs, all
of these Christians who were killing each other,
are supposed to stand at a great white throne judgment,
to be judged for their deeds.
At this point, it should not take much thought
to realize how each of these Christians in his or
her own beliefs, thought that they were doing Gods will.
(Of course, all of them will make an excuse for not being
a conscientious objector)
This would make any form of judgment a mockery.
War isn't a very good way to judge someone IMO unless they're giving the orders.
If I join the military my job is to follow orders regardless of my beliefs.
Am I a bad Christian if I shoot another Christian in war? Am I supposed to go ask the enemy if they're Christian before I shoot them?

We wouldn't have much of a military if everyone was allowed to fight based upon their religious beliefs.