ΔE 28.5, loose: different enough that you should pick on purpose. Dusken Green is noticeably darker, much more saturated, cooler than Metallic Gold.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 29). Dusken Green is noticeably darker, much more saturated, cooler than Metallic Gold.
The same difference applies the other way round: Metallic Gold is noticeably lighter, much more muted, 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 Metallic Gold on the colour wheel See Dusken Green on the colour wheel
All matches: Metallic Gold equivalents · Dusken Green equivalents