Agreed. There is a huge difference in show quality birds and hatchery stock.
Since it sounds like you are just getting into this, I'd suggest talking to your county extension agent's office, in the phone book under county, and talk to them about showing chickens. What I'd be looking for is someone in your area that judges chickens so you can ask them questions and maybe even get them to talk to you about your birds good points and weaknesses. Or find out about shows in your area. Go to these shows, talk to people, and see what is being shown and judged. You'll need to find out about health records, vaccinations, and inspections required to show birds in that specific show and for shows in general. And you can possibly make contacts with breeders in your area.
If you are going to show chickens and improve, you need to have a bit of a thick skin. You can't get too overly attached and defensive about your chickens but have to be willing to listen to what the people that know tell you so you can learn and improve. If they tell you the chickens legs are too short or the comb has too many points, they are not personally attacking your chicken or have anything against you, they are just trying to help you learn. I have not seen anything in your post to indicate you may have a thin skin about this. I'm mainly mentioning it to point out it is a learning process and you have to really be willing to learn and maybe become a bit passionate about it to do well, but it can be enjoyable just trying it.
Good luck!!!