Yes, setup plays an important role and I would agree that beginners do not need high level instruments or bows to start learning, but at a professional level, CF bows are inferior across the range to pernambuco bows in terms of sound quality, balance at the tip, string response and so on. I have tried all kinds of CF bows, including two (from Arcus if I’m not mistaken) that were priced around €8000, which is mind boggling.