What I use

Helical Contraption’s ATK:

S0 = 501 ATK

Divine Key sync = 114 ATK

Dorm Squad = 85 ATK

Affix = 92 ATK (total from 3 pieces)

Total ATK = 1130 ~ 1409 ATK (depends on weapon)

All equipment are at max

No Emblem

No Divine Key active buff

3★ Book of Fuxi ELF

Azure Empyrea: no ATK affix

Midnight Absinthe: no ATK affix

Round 1 (Typeless Enemy)

Round 2 (Quantum Enemy)

Tower of the Past: Silk Ladder (PRI)

The difference with alternative weapon is just far.

Falcon-PRI has high 40% Total DMG for Vill-V, but just that.

Tower-PRI has higher ATK, decent 27% Total DMG, not bad 10% Fire DMG, important 12% Fire debuff, extra %ATK of Fire DMG, and high active DMG (for Vill-V, only Tower-PRI and Tower-non-PRI can unleash weapon active).

Falcon Flare FINAL vs Domain of Revelation (PRI)

Stats that can active on Vill-V:

Falcon Flare FINAL: 433 ATK, 40% Total DMG for all ATKs.

Domain of Revelation: 409 ATK, 30% Total DMG for Charged & Ultimate.

The main power of DoR is its weapon active. Since Vill-V can’t unleash DoR weapon active, its easy win for Falcon Flare FINAL, higher ATK, higher multiplier.

Briareus EX (PRI)

If you don’t have one of three weapons above, you can use Briareus EX if you already have it at max.

But if you don’t have it, don’t craft if it is only for Vill-V, too expensive. Even with new buff 25% Ele DMG for QUA wielder, the gap with Domain of Revelation is still there. Also very very far below Tower-PRI.

Crusher Bunny 19C vs Eye of the Collapse

In Round 1 (typeless enemy), Eye of the Collapse's Passive could not active. Against non-Quantum enemy, Crusher Bunny 19C is better.

In Round 2 (Quantum enemy), Eye of the Collapse's Passive could active. Eye of the Collapse can beat Crusher Bunny 19C when facing Quantum enemy in Collapsed state.

*Note: my test account doesn't have Key of Reason and Falcon Flare 0019 (non-PRI), I can test them.

Markov Type A

60% chance to inflict 2 Ignite Trauma, CD: 1.5s. Vill-V has high hit rate, so it’s like 100% chance.

The only weapon with ignite passive in this test. But ignite doesn’t contribute much in this test.

In very rare case, Markov Type A can beat Briareus EX. But Briareus EX is still better in general.

Summary

All weapons in this test don’t have extra SP regen.

All 5★ and 6★ weapons in this test can’t inflict Ignite Trauma.

Signature weapon wins with high gap thanks to the combination of high ATK, Fire debuff, burst mode weapon active, and extra %ATK of Fire DMG.

In terms of gameplay, the difference is just that weapon active on signature weapon. No other unique mechanism, no unique rotation.

The best alternative weapon is Falcon Flare: FINAL.

The best farmable weapon is Briareus EX.