That's all based on a fairytale world of a fixed Dash/USD exchange rate.
Again, Dash is not a stablecoin so the USD projections are irrelevant. The ROI figures are also therefore irrelevant because it's the Dash/USD exchange rate that dominates ROI, not masternode reward.
I said ignore any fiat information there. Please re-read my post. None of the FIAT is used to calculate the annual revenue.