ΔE 30.8, loose: different enough that you should pick on purpose. Pink Horror is much more muted, cooler than Pink Fluor. They are different kinds of paint: AK Interactive Pink Fluor is a fluorescent or effect paint and Citadel Pink Horror is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 31). Pink Horror is much more muted, cooler than Pink Fluor. They are different kinds of paint.
The same difference applies the other way round: Pink Fluor is much 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 Pink Fluor on the colour wheel See Pink Horror on the colour wheel
All matches: Pink Fluor equivalents · Pink Horror equivalents