You are like cancer x.x, sarcasm aside. You didnt specify which AB model. BTLs are ******* nasty, but still you didnt specify BTL n2 or BTL n3...2 12s but better options available....
Look into Skar Audio. Excellent drivers & great customer service.
Also depends on blahblahblah, XFLs should be louder than a BTL n2, but a BTL n3 would be up there if not beating it if properly powered2 12s more cone area and motor force = more potential loud
Can NEVER go wrong with a BTL :>running ap 3k, but will soon get a ab vfl 500.1