ΔE 34.6, loose: different enough that you should pick on purpose. Demon Red is noticeably darker, much more muted, cooler than Incursion Orange.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 35). Demon Red is noticeably darker, much more muted, cooler than Incursion Orange.
The same difference applies the other way round: Incursion Orange is noticeably lighter, much 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 Incursion Orange on the colour wheel See Demon Red on the colour wheel
All matches: Incursion Orange equivalents · Demon Red equivalents