I agree...that is the way it looks......so a two man crew unacclimatised can perform an 11 hour FDP Without going into discretion. A three man crew with any member unacclimatised can complete six hours longer (17 hour duty) ....as long as they have a minimum of 90 mins rest each.
In reality (as cabin crew typically have less rest than flight crew) page 33 means that the cabin crew limitations are likely to be the limiting factor to any extension.