ΔE 15.4, loose: different enough that you should pick on purpose. Mars Orange is noticeably darker, more muted than Lugganath Orange.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Mars Orange is noticeably darker, more muted than Lugganath Orange.
The same difference applies the other way round: Lugganath Orange is noticeably lighter, 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 Lugganath Orange on the colour wheel See Mars Orange on the colour wheel
All matches: Lugganath Orange equivalents · Mars Orange equivalents