Sprites playing at different animation speeds (gles20)

One of the changes that’s been made between 1.0-x-0.13 and the new gles2.0 version is that CCAnimate no longer has a duration, and gets animation speeds directly from its CCAnimation.

Does that mean I can no longer have two sprites playing the same animation, but one is playing at twice the speed? Is there a new action of something that I’ve missed that lets me still do that, because I don’t want to load several versions of the animation for playing at different speeds.