Why do we use crystal reports when we have reporting tools in BO itself?

Using Crystal reports we can connect to any database directly using one of the providers such as ODBC Connection.
But in BO we have to use Universe concept to generate the report using WEBI.

In WEBI we don't have add command option ,in crystal report we have add command option.

To my Understanding Crystal Report is older then Webi and it has more user friendly Connection available compare than webi. Custom formatting, Wide range of Variable, Predefined Filter, Printer and etc.... It usually use for Transitional data.