ΔE 9.5, close: similar, with a visible difference side by side. Luftwaffe Uniform is a little darker, more saturated than Neutral Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Luftwaffe Uniform is a little darker, more saturated than Neutral Grey.
The same difference applies the other way round: Neutral Grey is a little lighter, more muted.
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 Neutral Grey on the colour wheel See Luftwaffe Uniform on the colour wheel
All matches: Neutral Grey equivalents · Luftwaffe Uniform equivalents