ΔE 13.8, fair: the same colour family, but not a straight swap. Trollslayer Orange is a little darker, more muted, cooler than Incursion Orange.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Trollslayer Orange is a little darker, more muted, cooler than Incursion Orange.
The same difference applies the other way round: Incursion Orange is a little lighter, 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 Trollslayer Orange on the colour wheel
All matches: Incursion Orange equivalents · Trollslayer Orange equivalents