Originally Posted by Barrettscv

Not every brand name seen at retail in the U.S. own a factory that produces carbon fiber frames. These frames are produced by a factory that builds for several brand names. However, this does not result in all carbon fiber frames being the same. Usually, frames are built to a distinct set of features and specifications unique to each model. Often these frames provide an advantage, depending on who will use the bike and how.

I would look at the geometry tables and read up on the reviews and marketing statements on the bikes you are considering.