Having lived in both countries, my experience in the U.S. was less than ideal. About the same amount of wait times as in Canada, and the doctors I saw gave me very little options as to how I could treat one of my chronic injuries. Never suggested a follow up appointment, physio, or even x-rays/MRI's to get a better look. In Canada, they recommended me a specialist, and I have a nurse at a clinic who has built a great relationship with me to assess my needs when I need help, as well as x-rays/MRI's done within a week.
My experience isn't like all in Canada or the U.S. but after touting how much better I thought the U.S. would be because of my great insurance and living in one of the top cities in the country, I wasn't impressed at all.