Word from Planetside 2 is were getting double SC this weekend. http://massively.joystiq.com/2013/03/26/soe-talks-forgelight-engine-planetside-2-player-app/
SC sales tend to be SoE wide. Double exp events tend to be game specific so my guess is no double exp.
... with instances being borked so bad last week I wouldn't be opposed to 2x exp as well... wishful thinking