That's too blurry for me, so I can't see if there are any dates attached. On the one hand, it's good to have the JSA and it's good that Wonder Woman is given a longer timeline. On the other hand, if the first genearation is just thirty years ago or whatever then that means the WW II setting is thrown out. My preference is a JSA on Earth-Two that was established in 1940. I think the WW II setting is good for Wonder Woman's mythic scope--having her emerge on the scene when the whole world is at war suits her epic stature.