You say "millions". What are you arguing over anyway? You don't dispute the holocaust happened and the numbers were in the millions. Why not go with the best data, which says 6 million killed by Germans in the holocaust? Also, nobody says "exactly" 6 million. Approximately 6 million is what they say. Again, what exactly are you arguing about?
By denying validity of the estimate without better information than the official approximate count, you are saying what holocaust deniers say. It's not unreasonable to think if a person repeats the propaganda of holocaust denial then they are a holocaust denier. I can see how AC called you a holocaust denier. I'm open to saying that about you but you haven't crossed the line to where I would.
Edit: I can see how
@UncleBuck would call you a holocaust denier too.