That's right!

And 1 more diffrence is that they encrypt the .exe file for expanstions patch.
Think deviance or other crackers, use neverwinter .exe becuase is unecrypted and only protected with CD-Checks, kind of stupid to rip when you can get around in other ways...
Note: SecuROM is a protection that's encrypt the .exe file. IF AM NOT TOTALY MISSTAKING!