Wormwood and Barrenness

Consider Wormwood has 6 counters.
I have a 10 cap vampire who is treated as a 6 cap.
I now play Barreness on that vampire.
I see 2 possiblites now:

1. The vampires capacity is reduced from 10 to 8, and Worwood treats him as a 6-cap. (Wormwood does not actually reduce that vamps capacity, it just treats it as a 6-cap.)
2. Wormwood treats the vamp as a 6-cap for all purposes, and Barreness reduces the capacity to 4.

Im not sure which one is correct.

Barrenness
[Action] Action
[Burn Option]
[Maleficia] Maleficia

+1 stealth action.
[mal] Put this card on a vampire and untap this acting vampire. This vampire is sterile and his or her capacity decreases by 2 (to a minimum of 1.) [mal] is not a Discipline.
[MAL] Burn a vampire whose capacity is 1.


Wormwood
[Event] Event

Gehenna. Do not replace until your next discard phase.
Requires at least one other Gehenna card in play. Put 10 counters on this card. Burn 1 counter whenever another Gehenna card is put in play. A vampire whose capacity is greater than X is treated as if his or her capacity is X (minimum of 1), where X is the number of counters on this card.

vekn.net/card-rulings/card-rulings-p-to-z

That wrote:

Wormwood snags the vampire's actual capacity (complete with any effects that have changed that actual capacity) and clamps it to X. Orun will add to that X (or to the vampire's real capacity if it is less than X) for cards played by other players. [LSJ 20051205]

Barrenness is a proper capacity affecter (unlike the weirdness of Orun), so the vampire's actual capacity is 8. Then Wormwood means that it's treated as 6.