ΔE 20.7, loose: different enough that you should pick on purpose. Sunset Orange is a little lighter, more saturated, warmer than Fanatic Orange.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Sunset Orange is a little lighter, more saturated, warmer than Fanatic Orange.
The same difference applies the other way round: Fanatic Orange is a little darker, more muted, cooler.
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 Fanatic Orange on the colour wheel See Sunset Orange on the colour wheel
All matches: Fanatic Orange equivalents · Sunset Orange equivalents