Retirement readiness of employees in large organizations

A recent study quoted in this New York Times article reports information on the retirement readiness of employees in large organizations.

Do you know:

1) The amount of accumulated assets required to last through retirement?

2) What percent of pre-retirement income is generally required during retirement?

3) What would be the shortfall to make up the difference?

The study quoted in the article contains responses to these questions, and information on steps to address these issues.

Where would you plot your own situation on this study?