Black Citadels TiCN or DLC?

[Creepo]

I was browsing my paper catalog and was reading the description for the Citadel and noticed it said it is available with carbonitride coating, I'm guessing this means titanium carbonitride aka TiCN.

But wasn't TiCN only used in Seki made models? :confused:
Since other Golden models come with DLC I was thinking it was a mistake.
So is it really TiCN or not?
If it is TiCN, why?
Isn't DLC better?
:confused:
I was hoping if someone from the crew could clear this up. :)

[Creepo]

Ok so which is it? I would really like to know. :)