What is the best breed that will grow its population the quickest?

[Outta Here]

I like looking at the breed facts from Cackle Hatchery (thanks, Cackle!), so I've just collected the stats on some of the breeds known to go broody. Along with weight and egg production, hardiness and temperature tolerance would also need to be considered.
From this list, the Orpington sure looks good!

Dominique: 5 lbs hens, 7 lbs rooster, 180-260 eggs yearly

Delaware: 6.5 lbs hens, 8.5 lbs rooster 180-260 eggs yearly

Chantecler: 6.5 lbs hens, 8.5 lbs rooster 150-200 eggs yearly

Bielefelder: 6.5 lbs hens 8.5 lbs rooster, 230 eggs yearly

Marans: 7 lbs hens, 9 lbs rooster, 180 eggs yearly

Sussex: 7 lbs hens, 9 lbs rooster 180-240 eggs yearly

Buff Orpington: 8 lbs hens, 10 lbs. rooster, 200-280 eggs yearly

Cochin: 8.5 lbs hen, 11 lbs rooster, 110-160 eggs yearly

Brahma: 9.5 lbs hen, 12 lbs rooster, 150 eggs yearly