You can get bravery bonus on base level 21 epic quests with the normal BB mechanic +2 levels above base level.
So any base level 21 quest means BB is still in effect for character levels 21-25.
As an example, apply that to a base normal level 24 (the eGH quests) ---> BB is in effect through to level 28.
I've talked with a lot of players recently who were confused by the epic BB mechanic so hopefully players will change gears and help get our server base up to speed and getting up to level, and getting good stuff up for trade .
(For EN level 20 quests, it is the same drill except +1 instead of +2.)
Cheers and thanks for playing,