What do you understand by powerful at data converter?

The "Powerful" word itself says about having great power, prestige, or influence. 

"Powerful Data Converter" means users can perform Export, Sort, Filter, Group By, and non-database write operations on the grid. The grid can read data from any data source including CSV, XML, XLS (Excel), and HTML files.

Or you can directly go to the "Data Converter" page by clicking the following link: https://www.mindstick.com/products/data-converter