At BWV, Preferred includes both BW & P/G views. When BWV first opened there were only the Preferred and Standard booking categories, and BW View was a request. Several years later they made them separate booking categories. My understanding is that it’s rare for cash reservations to get BW View. OTOH a renter might get it if they book early enough. The point requirements are the same.
I think because Boardwalk View is pretty small, that broker just put them together in the request pattern and leaves it to availability for the booking owner. Or it's legacy from before the category split.
Do be aware that both Standard View and Boardwalk View book quickly at many times of year. They are each about 20% of the resort - and the remaining 60% of the resort is most people's third choice. I'd be open to preferred pool/garden view, with a preference for standard and/or boardwalk when you book.