In Data Comparison tool, the "treat null and empty string as the same" option needs to be split into 3 options.

Option 1, for strings: Treat null and "<string defined by the user - default = EMPTY STRING>" as the same value

Option 2, for numbers: Treat null and "<number defined by the user - default = 0>" as the same value

Option 3, for dates: Treat null and "<date defined by the user - default - 1900-01-01>" as the same value

The 3 options should have checkboxes (so the user will activate them on demand) and give the ability to define which value to treat as the default...