ΔE 17.3, loose: different enough that you should pick on purpose. Orange Rust is noticeably lighter, more muted than Benzimidazolone Burnt Orange.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Orange Rust is noticeably lighter, more muted than Benzimidazolone Burnt Orange.
The same difference applies the other way round: Benzimidazolone Burnt Orange is noticeably darker, more saturated.
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 Benzimidazolone Burnt Orange on the colour wheel See Orange Rust on the colour wheel
All matches: Benzimidazolone Burnt Orange equivalents · Orange Rust equivalents