ΔE 28.7, loose: different enough that you should pick on purpose. Trollblood Highlight is much more muted, warmer than Gauss Blaster Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 29). Trollblood Highlight is much more muted, warmer than Gauss Blaster Green.
The same difference applies the other way round: Gauss Blaster Green is much more saturated, cooler.
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 Gauss Blaster Green on the colour wheel See Trollblood Highlight on the colour wheel
All matches: Gauss Blaster Green equivalents · Trollblood Highlight equivalents