You are right. The 15H is A less than $900 sub vs the PB13 which is a $2,000 sub. Which should win head to head?
I have been blessed to be able to own two 15H's which amounted to less than 1 Pb13 in price. I don't see 1 PB13 besting two 15H's on any given day. In addition, you can split the 15H's for a better room response.