Art Magic - Evoke versus test successes

[dpolan (David)]

@Gnosego

The Wizard generates 5 successes. His Ob penalties eat up 4 of them, so he has 1 success net. 1 x 2 = 2.

2 is the Werewolf’s obstacle. The Werewolf generates 4 successes. 4 > 2, so the Werewolf wins.

Does the maths of the versus test work that way? I though you have to sum up first all the successes of both opponents and then add the additional Ob for each side, as I interpreted in this @luke response:

https://forums.burningwheel.com/t/versus-tests-and-obstacle-modifiers/2903/2?u=dpolan

@Gnosego

What happens in the fiction is that the the arrogant Wizard tries to lay a powerful binding on the man-beast to restrain it indefinitely (adventure duration would be +3 in addition to single target breadth for +4?), but his expertise is not up to the task, and the Werewolf breaks free it’s mystic chains, and flees to hunt another night (presumably).

I think you’re right about the “tie”, I was thinking too on a tie, but wrote it as both if sides fail (taking into account the example when both opponents rolled 0 successes), although the outcome it’s the same.

In the case of Evoke, where the wizard is the aggresor, I guess this tie means the defender wins the versus test so… the wizard fails the cast of the spell and has to suffer the Tax consequences? And, in a hypothetical case of none of the characters being the defender, the tie (as in the written Versus rules of BWG) means the spell also fails or it succeeded but the target resisted?

Thank you