ΔE 7.3, close: similar, with a visible difference side by side. Bright Orange is more saturated than Trollslayer Orange.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Bright Orange is more saturated than Trollslayer Orange.
The same difference applies the other way round: Trollslayer Orange is more muted.
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 Trollslayer Orange on the colour wheel See Bright Orange on the colour wheel
All matches: Trollslayer Orange equivalents · Bright Orange equivalents