No, but their growth patterns are quite different.
Breastfed babies tend to grow faster than formula-fed babies in the first four months of life.
Weight gain in the breastfed baby then slows down over the next several months. The ones available now are based on babies who are primarily formula-fed. The World Health Organization is currently conducting an international study of breastfed babies in order to create new growth charts. When these charts are ready, nursing mothers and healthcare providers will have a much better resource to help them monitor the growth of breastfed babies. As with any source of medical or health care information, you should as a preliminary matter satisfy yourself that the credentials and experience of the source are suitable.