Comodo Dragon vs Comodo Chromium Secure.

What are the differences between this browser its very hard too figure out.
And why develop 2 Chromium based browsers, this seems very strange and unnecessary.

This is the only information i have found…

Wich should I choose: Comodo Dragon, Secure or IceDragon?
The choice is yours! Chromium Secure is based on Comodo Dragon, but adds additional unique privacy features not found in any other browser.

What unique privacy features?
And if Chromium Secure adds additional privacy features not included in Dragon why develop Dragon…?

If anybody have some information to share i would be grateful.