So....Brewmaster changes: Wowhead link
Stagger is 75% more effective for 6 sec.
But....
Stagger has been changed to:
a portion of Physical damage based on your Agility, instead taking it over 10 sec. Affects magical attacks at 20% effectiveness.
That sounds very strange to me without solid numbers. This seems like it has a high potential for spiraling out of control, starting too weak or just....I don't know. Being a mess to manage. Perhaps I am just not thinking about it in the right way, but it seems like needless complication.