There are one handed staffs that have 20% casting speed & 20% recharge time.
You can find these collectors in the desert or around Droknar's forge. The items the collectors give have those hidden stats (20% of either or, or 20% on both). I'm not sure if it's possible to stack them though to get 40%?
The items that PvP characters are given are the equivalent of the collector items, so they are not better or worse than a PvE character.
Here's some info I had on Death Magic weapons/offhand items:
Minotaur Horn - Luven Underwood - outside Elona Reach
Bone staff / death magic
(this might have the 20% recharge & 20% skill casting)
iridescent griffin wings / Arliss Vaughn / skyward reach
Truncheon (cold dmg:11-22, req. 9 death magic)
(this should have 20% of one of the things)
dune borrow jaws / Sir Pohl Sanbert / arid sea
Grim cesta (energy+12, req. 9 death magic)
(this will be 20% of the other thing)
more info about these collectors (and other items) can be found here:
http://www.guildwarsguru.com/forum/s...7&page=4&pp=25