I understand that, however, this particular C99 is a fast flowering one, it's been crossed with an auto flowering strain. Many will testify to it's authenticity as a fast flowering Sativa.
The following is taken from the breeders website.
http://www.femaleseeds.nl/webshop/c99-p-1621.html
This next quote is taken from SeaofSeeds
http://www.seaofseeds.com/product-detail.php?cat_url=Female-Seeds&prod_url=c99
I don't mean to sound arrogant when saying this, but I'd rather go with what the official breeder is saying, as well as a respected seedbank, rather than someone on a forum. I'm sure you'd usually be right and it's still possible you might be, but I think in this case you're wrong. As I said, I don't mean to be a dick about it or anything, just don't really know how to word it without making myself look like a dick.