If you cooked your favorite dish, your way, with French ingredients it would be better.
It's not just the cuisine itself, it's the quality of the ingredients and the care that goes into the ingredients themselves.
I live in San Francisco, Northern California has some of the best food in the US because there is a diverse group of people here with equally diverse and delicious food traditions, and access to very high quality ingredients.
All that to say, French food and ingredients are still better.