ΔE 9.4, close: similar, with a visible difference side by side. Faded P.R.U. Blue is more muted, cooler than Air Superiority Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Faded P.R.U. Blue is more muted, cooler than Air Superiority Blue.
The same difference applies the other way round: Air Superiority Blue is more saturated, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Air Superiority Blue on the colour wheel See Faded P.R.U. Blue on the colour wheel
All matches: Air Superiority Blue equivalents · Faded P.R.U. Blue equivalents