I don't know that B&W necessarily has more clarity than Focal. However, I think the B&W has a much thicker and meatier midrange. The focal tends to come across thin sounding (unless you very warm electronics such as McIntosh or similar).
In my opinion, I like the sound of B&W better, but if you are considering getting a B&W center, you should also switch your left/right to B&W.