I'm not sure what's up. At 2:32 in the video, there's a picture of Sue and Agatha with two blond kids who seem to be Val and Franklin. But Franklin and Val do look younger there. My guess is it's an out of continuity story to give Neal Adams a nice sandbox to play in. Mark Waid is there to make sure the story doesn't get the disdain that Adams' Batman: Odyssey and Superman: Coming of the Supermen got. Waid undoubtedly knows how old Val and Franklin are now, but may not like it or even care about the older Richards kiddies. A good point for a younger Franklin is that he won't be able to pull a rabbit out of his omega-level hat and fix a problem that is bothering his future buddy, Galactus.