Does God exist: A hopefully civil and fruitful debate

Yes, but at this moment do we know who is right? or who is wrong?

There is a distinction here, and I apologize for not having used better words.

The distinction has to do with justification. One can be a nutjob and still has the correct answer, after all, God either exists or doesn't exist. What warrants 'attacks' is their justification for their belief, and those can be good or bad.

For this purpose, we don't need to know the right answer.

So, by your own wording, an 'irrefutable answer' would be a position that is backed by the most defensible justification. Again, we certainly can justify our beliefs, and some do it better than others, so it's reasonable to expect that there is a best candidate.