I can't speak to International Football, but replay reviewers in the NFL and MLB often seem to end up with conclusions that don't make sense based on on the video evidence. Perhaps the International Football community has figured it out. Either way, if you have a human video reviewer overturning plays based on "a miniscule amount", your eyes may see something different than my eyes, which is different than the eyes of someone else on this board. My point was that if you're using humans to make a judgement call, there will surely be multiple judgements on the same play at times, especially the close ones they're trying to review.