that our carriers will both end up costing around the same amount as the last of the Nimitz class. Which is true.
Yet they are much cheaper than a US carrier being built TODAY. Do you understand the concept of compound interest ? Something paid for a decade ago is cheap simply because of inflation never mind having a different design.
How much is it going to cost us to refuel this behemoth every few hundred yards, with the price of oil increasing exponentially?
Running costs of Nuclear is more than oil. The CdG also has had availability problems due to its nuclear propulsion.