It does bring up a question I have. My understanding is the cost per flying hour (CPFH) takes into account all the costs associated with the plane, i.e. basing, salaries, training, fuel, etc., and then divides by the total number of hours flown.
The problem is that figure is not the same thing as the cost to execute a mission, nor the cost to maintain a plane type. An A-10 doesn't magically just pop up starting within 250 miles of a CAS site, you need to establish a base, set up security, maintenance facilities, all the logistics (food, fuel, beds, etc.). If it's relying on aerial refueling, IIRC the cost of that tanker (the physical plane, the tanker crew, their training, etc.) isn't included in calculating a plane's CPFH -- but it very much is a cost that they need to consider when planning out a mission. So a big problem with these CPFH infographics is that they mislead people into thinking "well why do we fly B-2's from halfway around the globe for all those hours with a high CPFH when we could have just flown some A-10's from nearby" when it totally ignores the underlying costs of positioning the A-10 close enough to where it can be useful. (I'm just using the A-10 as an example, any other plane could be used.)
IIRC, the Air Force has said that the F-35A will have a somewhat higher CPFH than the F-16, but the cost of maintaining the actual fleet will be close to the same because (rough numbers here) each F-16 flies 300 hours per year while each F-35A will fly 250 hours per year -- the decreased number of hours due to increased use of simulators plus the focus of flight training being different (more tactics, less how to manipulate the cockpit). So for example investing in better flight simulators means more cost to the program (increasing the numerator in the CPFH) while decreasing the number of flight hours (decreasing the denominator) -- so looking from purely a CPFH point of view it's actually a bad thing to do, but they're more concerned about the total program cost.
My feeling is that it's better to look at the total cost needed to successfully execute a mission, rather than to just look at different planes and compare their CPFH.