As quoted, 12C1b:The Director in awarding an assigned adjusted score should seek to recover as nearly as possible the probable outcome of the board had the infraction not occurred.
How does the Director do that? Well, in most of the world anyway:
12C1c said:
An assigned adjusted score may be weighted to reflect the probabilities of a number of potential results, but only outcomes that could have been achieved in a legal manner may be included.
Weighted assigned score - designed specifically to solve this argument.
Absolutely, we look at "could make", and then we decide how likely it is that it "would make". We add a little bit of vigorish for the NOS, and then we assign the weights to 2
♠x= and 2
♠x-1 (and any other possibilities, I guess).
Then we matchpoint both of those scores against the field, multiply by the weights and add together, and compare that to the MP score for -140. If it's better, we assign it. If it's not, we rule "no damage" and let the table score stand.
How do we work out weights for "would make"? Any possible way that the director considers reasonable. Yes, that includes DD results (and "okay, does it make sense to finesse the 8 round 1?"), table results (although who knows if those match the information (the auction, mostly) that the table director has), director's opinion, polling of players of the (adjudged) declarer's skill (do we use the "field results" when this North is known to be the best declarer in the room? How about if this declarer couldn't resolve a dummy reversal if the opponents gave it to him?), and probably more.
All this, of course, assumes that we have ruled that pass is a LA in this auction with these players and their system. Having said that, 1NT to almost all implies a spade stopper, and after a natural NT, doubles by the NTer are penalty. I would need either "local knowledge" of something different or serious evidence that this isn't the case - a slow "could be penalty" double *always* invites pulling, even if the hesitation is "searching memory for the notes that it's takeout". Now, in the EBU, with their idiosyncratic (but solid) Alerting regulations over Double, the Alert or lack thereof would be more evidence of the system agreement. Most of us don't have that, though.
When I go to sea, don't fear for me, Fear For The Storm -- Birdie and the Swansong (tSCoSI)