Vanguard Barrow Wights vs KoW Wights - Base size

Barrow Wight says it’s 25mm Base on the Vanguard card that came with the box. KoW Wights on the other Hand are 40mm.

Is this correct? Are they different units? Thought models were mesnt to be mostly interchangable for their KoW/Vanguard counterparts, so neither me nor my friend is surw at this point but want to avoid having to rebase later.

Any thoughts?

It’s an unfortunate difference, but true. Think of the Vanguard Barrow Wights as Lesser Barrow Wights. The Vanguard model does indeed fit on a 25mm. The KoW models are different, bigger, models, and fit on 40mm bases.