I'm no scientist, and I don't know a whole lot about pressure systems, but I've always found that my beers do better when in a keg. So, carbonation may not help them age better, but I do think the pressure does.
I typically rack to a keg and then hook it up to my CO2 at 12-15psi. Within a few weeks, it's usually tasting great. After a month, it tastes better. When I bottle, it takes twice as long to get to that level.
He who drinks beer sleeps well. He who sleeps well cannot sin. He who does not sin goes to heaven.
Another HERMS rig...