In Darkstalkers 3 you can roll up the ground really fast and can block in air which is a thing that most SFs don't allow. BB is more defensive friendly than GG. Also, BBCP got shortened combos and very few chars can full-bar K.O. with a single combo so, IMHO, isn't like UMvC3. The OD is very similar to that mechanic I can't remember the name in Darkstalkers and I believe that execution is easier in Darkstalkers than SFIII. This is why I compare ASW's two main FGs like that. I know that you can roll up in SFIII but is not that good than Darkstalkers'. As in GG you can't roll up the ground, oki game becomes stronger than BB and that's also a reason why I compare to that. Most games has strong oki game but in terms of general view BBCP is more like a Darkstalkers game and GGAC+R is more like a SFIII3rdS game.
And as a miscelanous, Mori's favorite FG not made my ASW is Darkstalkers 3 while Ishiwatari's SFIII3rdS xD