With a monocoque frame wouldn't using the same exact mold result in the same exact geometry angles and lengths (question not rhetorical). I think the implication above that they are using the same mold just because they contract out to the same manufacturer is flat out not a forgone conclusion. Giant makes tons of monocoque frames. I'm pretty sure they have more than one mold. I have a hard time believing that Colnago can't afford their own proprietory mold. Did they borrow some things from Trek?, maybe, but it doesn't mean they're just stamping Colnago on a Trek frame.

Also, according to the prices listed in an article by Bicycle magazine the pricing is pretty much in the middle of the pack against the competition. I know you have to take a lot of this rag's articles with a grain of salt but the pricing info is probably accurate.