Quote Originally Posted by saevel View Post
It would do zero because they would all be dead.

The answer to that scenario is Curaga IV. No JA usage / lockouts, just cast it on your cure anchor and the situation is solved before it's even a problem.
You missed the point of the conversation. It wasn't to assess the best cure to use in that situation. It was a comment that DS Cure has no purpose these days. Babekeke pointed out that such a potent cure with a cureskin is sufficient as is.

And they also wouldn't necessarily be dead if you wanted to preemptively apply the cureskin to the entire party.