What is 'Comparable' ?
Law 23A1 says that … a comparable bid … has the same or similar meaning to that attributable to the withdrawn call ..
For an insufficient bid this is meaningless because the withdrawn had no valid meaning. All bids depend on context and insufficient bids have no valid definition. The caller almost certainly made the bid on the assumption of a different context – and the Director will not want to reveal this context.
Let’s take some examples. All start with North opening 2S and East making an insufficient bid:
(1) 2S – 2H. What did the caller mean by 2H? Was it: PASS – 2H or was it 1S – 2H? [East may have not noticed the 2S bid - or misread it as 1S.] A weak two opening is very different to a simple overcall so the comparable calls are not clear.
I know that 2H could be replaced by 3H but that is not my point.
(2) Is the situation any different if it goes 2S – STOP 2H ??
(3) Now try 2S – 2C. Now there is a very real difference if the 2C was intended as an opening ACOL strong bid.
(4) How about 2S – 2C ALERT is interesting because it’s possible that East meant 2C as an overcall but West thought otherwise.
I have just made up some examples to illustrate my point – which is that ‘comparable’ calls are not well defined because we don’t know what we are comparing to.