ΔE 4.1, very close: most people won’t see a difference side by side. Transparent Red Iron Oxide is a little darker than Nuclear Sunrise. They are different kinds of paint: Army Painter Nuclear Sunrise is a one-coat contrast-style paint and Golden Transparent Red Iron Oxide is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 4). Transparent Red Iron Oxide is a little darker than Nuclear Sunrise. They are different kinds of paint.
The same difference applies the other way round: Nuclear Sunrise is a little lighter.
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 Nuclear Sunrise on the colour wheel See Transparent Red Iron Oxide on the colour wheel
All matches: Nuclear Sunrise equivalents · Transparent Red Iron Oxide equivalents