You have some nice DC. I'm afraid I did think you might be referring to hatchery "Cornish" when you mentioned the laying. My bad, and I apologize to you for using an excerpt from your post to point out some of the more elemental differences between Cornish and other birds sold as Cornish..
There have been many pictures or mention of Cornish here on this thread that just were not real Cornish, and with the lack of breeders of quality Cornish posting pictures of their birds here regularly, they have few to see and compare. I've been contacted by a few wanting Cornish after seeing pictures of mine. I think interest in the breed is growing, though that might be wishful thinking. LOL Most seemed to think that those from a hatchery were pure Cornish but liked the quality of mine pictured here more, and I seem to be one of a very few willing to sell hatching eggs from quality Cornish when I have extra, or willing to sell a young pair with potential to the new person. Too few others even post pictures of their quality birds, and I wish they would,even though they have none to sell..One person that contacted me was wanting to buy White Cornish chicks from me for their kids to raise and show in the 4H broiler class, so figured we are falling short to help those new to Cornish or chickens in general to be informed about the breed. I know from reading awhile on threads for the other breeds that it might not do much good to explain some of the most simple differences here, and someone will probably appear on the next page that has never looked at this page, but I wanted to try and to do it without being insulting or talking down to them.
That is an easy thing to think on this site. You get all kinds of people thinking they have the best quality stuff, and when you see it you just want to do a face palm because they look nothing like they should. My favorite is all the folks with those green egg layers they call Ameraucanas!

I know most of my Cornish are hatchery quality that I have had, and I would love to take some credit for the pen of REAL DCs, but I bought them from someone who has done all the work. I just intend to carry on in the same tradition.
I have this guy too that I am going to play with over one of the hens from the good pen:
This isn't the best angle, and he isn't one I bred either. He came from Eugene Imwalles project pen last summer.
His 'sister' has the ugliest head on her of any bird I own! I have a few chicks from her and the Black Laced that dressed out nicely at 6-pounds last month.
I am thinking I may have to put those all in the freezer because there is a bad comb issue there. That is okay, because I will take a 6-pounder in my freezer from a naturally grown bird.