It depends on your goals. And it depends a whole lot on the ability of the breeder and how many chicks they hatch per year. Most chicks from show quality parents are not show quality, even from the best of breeders. You have to hatch a lot of chicks to choose from. That's why some breeders won't sell hatching eggs or chicks. They know most of the chicks will not be up to their standards and they want to protect their reputations. Others will sell eggs or chicks for their own very legitimate reasons. A lot of these chicks will be closer to the standards than hatchery chicks, but they can still have flaws that will keep them from winning th egrand championship.
Assuming the breeder is good, show quality birds are superior for "show" qualities and utilitarian birds are superior for their intended purposes, whether meat or eggs. I'm not aware of any modern utilitarian breed recognized by APA or such. I'm talking about the commercial broilers or the commercial egg layers, like the Dekalb. Fred may prove ne wrong on that statement.
Some people apparently have the idea that in the olden days, every backyard or farm flock consisted of show quality purebred chickens laying eggs art a fantstic rate and growing into meat birds in just a few weeks. Not the case. Different breeds were developed for different purposes, but many of the older utilitarian breeds were first developed for that utilitarian purpose, then people wanted to show them. So certain traits were then set down on paper and recognized so peope could copmpete against each other. Sometimes the traits they chose were utilitarian in purpose, like the feather color of a Delaware or a New Hampshire. A meat bird with light colored feathers gives a prettier plucked carcass. But then look at all the various colors and patterns of the Wyandottes or Rocks. Most of those were developed for show, not for utility.
I find the history of the development of the Ameraucana fascinating.
http://www.ameraucana.org/history.html
There are breeders out there that are trying to breed to the show quality qualities but also for the original utilitarian purposes of the breed, but good luck finding them. But don't get confused into thinking that show quality translates into utility. In general, show quality is just eye candy.
Back to your specific question. I don't work for both goals with my birds. I could care less whether they have show quality characteristics. I will never show my birds. I'm breeding dual purpose hatchery birds for meat and eggs. The egg laying is pretty well already there from most hatchery dual purpose birds, but the size and rate of growth for meat is not all that consistent. But through a few genetions of choosing my breeders, the size and rate of growth improves. I mainly eat my smaller poor performing roosters and hens and breed the ones that come closer to my standards. I hatch less than 50 birds a year, so my improvement is slow, but it is there. My culls are getting better every year.
For the vast majority of people on this forum, hatchery birds will meet their goals. Good egg laying and pretty birds with reasonable personality. Most of the dual purpose hatchery birds will make plenty of meat for the few of us that grow them for meat, but they won't touch the broilers for the amount of meat produced. They won't meet the standards of the commercial egg laying breeds , but for the majority of people, they are certainly good enough.