ΔE 9.2, close: similar, with a visible difference side by side. Flash Gitz Yellow is a little lighter than Battle of Yellow Tavern.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Flash Gitz Yellow is a little lighter than Battle of Yellow Tavern.
The same difference applies the other way round: Battle of Yellow Tavern is a little darker.
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 Battle of Yellow Tavern on the colour wheel See Flash Gitz Yellow on the colour wheel
All matches: Battle of Yellow Tavern equivalents · Flash Gitz Yellow equivalents