Mod Data Precedence

[Mikali]

Which mod data takes precedence over all others?
Or, in what order do the following types override each other?

a) Homeworld2.big
b) the Data directory
c) mod .big files
d) gametype .big files

[Edit]
I'm guessing that they'd be in the order I listed them. I haven't confirmed this through testing, though.

[Evaders99]

I would assume

Homeworld2.big
gametype .big
mod .big
Data directory

At least the way installing mods and such, it seems to work out that way when you have the command line -overrideBig and -mod commands