ΔE 16.3, loose: different enough that you should pick on purpose. Mustard Yellow is more muted, cooler than Averland Sunset.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Mustard Yellow is more muted, cooler than Averland Sunset.
The same difference applies the other way round: Averland Sunset 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 Averland Sunset on the colour wheel See Mustard Yellow on the colour wheel
All matches: Averland Sunset equivalents · Mustard Yellow equivalents