That's a good point. I asked the writers of those rules for conversion ideas at relatively short notice - I know them all and count them as pals. I don't know the designer(s) of Chaos in Cairo (wonderful fellows no doubt!) and I didn't think about asking them. In fact, I didn't remember their system at the time -- my apologies. Maybe for the next edition!
However, I think that most Lead Adventurers could figure out thie own conversions fairly easily, being resourceful chaps and all!