A spit eats a C2, given equal pilots. Especially a spit16 (by far the most common spit in the late arenas). Depending on merge, E-states, and so forth, it can best the spit9 on relatively even footing, but the 9 is one of the slowest spits, with the very weak 1942 engine (and the C202/205 is a 1941/1943 plane, if I recall), but the Spit8 has a WAY more powerful engine, WAY better turning and stall-speed handling, and the 16 even more so.
There's no reason the C205 should have an ENY of 5. Unless you're counting raw ammo load. In which case the N1K2 and F4U-1C should have an ENY of 1, the 110G-2 should have an ENY of 0.25. So the ENY is a little off-kilter to my eyes.