These do nothing notable for Joker, unless parry is now 1 frame and can be used as a reversal.
EDIT: My bad, after a second look these aren't too bad, the parry buff is more QOL than anything, still needs to be a reversal and wake-up, which is half the problem with it. Dependent on how advantageous on block crowbar is you could end up better off for set-ups/frame traps. Still needs a better overhead opener and for cans not to be utter garbage in the neutral.
Awesome series, please support the VN ps3 localization http://petitiononline.com/umineko1/petition.html http://www.facebook.com/OperationGoldenLand