Someone will probably pop in with the science behind it but the general consensus is that bulk aging is better. Meaning aging 5 gallons of beer in a single vessel is better than aging it in 54 individual significantly smaller vessels. Sorry that I can't explain it better than that but like I said, the general consensus...
From experience I can say that I have done the experiment where I have bulked aged a batch in a keg and aged a 12 pack and that "green" flavor is gone much sooner in the keg than the bottles.
Cry 'Havoc,' and let slip the dogs of war;
That this foul deed shall smell above the earth
With carrion men, groaning for burial.
Prim 1: Ogre's Inverted Extra Red Ale
Prim 2: Ogre's Hair of the Dog Imperial Amber Ale
Prim 3: Ogre's Relaxed APA
Sec 1: Honey Blonde Ale with Hefe Yeast
Sec 2: Scotch Wee Heavy
Sec 3: Ogre's Simple Mead
Keg 1: Ogre's Brown Ale
Keg 2: Ogre's Extra Red Ale