Overall, we find that the single numerical estimate of legally required time for firms to complete certain legal and regulatory processes provided by the Doing Business survey does not summarize even modestly well the experience of firms as reported by the Enterprise Surveys... The most interesting difference between these two approaches to assessing the business or investment climate is that Doing Business focuses on de jure processes and Enterprise Surveys on de facto practice.
The Doing Business estimates are problematic in four ways:
First, there is huge variance reported by firms within the same country.
