Accuracy of Google AdSense Revenue Calculator [question]

How accurate is the google AdSense revenue calculator? To clarify, in the finance category if you were to get 66,000 page views monthly it estimates an annual payout of around $25k. What if this traffic was all mobile but USA mobile users. Basically, if I get 66,000 page views on finance-related content and the users are interested in learning about finances, would it surpass $1,000 in revenue at least? I will be testing this out. I just feel like the google AdSense revenue calculator seems to vastly off based on some of the payouts I've seen from users on BHW. I would think paid traffic would be more common if it were accurate.