[emiliobumachar]

I have nowhere close to a legal background, but I think I understand what's going on here.

First, there's zero incentives for him to be precise. If the upper bound is far below his debts, he'll end up with zero regardless of whether he owns 50M or 100M or 150M.

There are incentives for him to be right. Putting incorrect numbers in a legal document is a faux pass at best, and at worse can be assumed to be malicious.