Toronto -
As I said, this is not my area of strength, but I still disagree. When Ted said "the equity holders are paying $50M for something worth $25M" (and I did not read the context of that post, so I'm sorry if I misinterpret it) he was wrong. The equity holders PAID $50 million. Book value will stay the same irrespective of market value, probability of default, etc. If debt is selling at a 50% discount and represented 50% of the book capitalization, I stand by what I said.
You are 100% correct about scenario analysis, but that effectively already has been done to produce the 50 discount on debt. It took the form of say, 50% probability that the company will have a liquidation value of $37.5 million, 50% that it will be $12.5 million for an expected value of the $25 million, which means ZERO equity in either case.
You don't write down debt that steeply until equity is completely blown thru.
Now if debt were trading at $45 million it would be a different story. That is most likely the result you see when there are still some possible scenarios where the equity has some value weighted against full write-off and loss given default scenarios.
I'm not sure if we really disagree conceptually. I think I'm just taking a leap based on the particular numbers of the example that we're using.