I disagree because some people have more opportunities in life than others and, for this reason, they have the chance to accomplish more.
For instance, a child born in a developing country would probably have less chances in his/her life for education and consequently less job opportunities than a child born in the Western world. Also, in the Western world, two people may have different education opportunities because one is raised by a rich family and the other is raised by a poor one.
Sometimes circumstances are unfair and so we shouldn't compare the accomplishments of two people without considering their circumstances.