B&W Px8S2 noise cancelling?

Hi all, I've had the Sony wh1000xm3s for a long time now and it's finally time for an upgrade.

I've been looking at the B&W px8s2 but have heard the NC is a bit lacking. The nc on the xm3s has been more than enough so I'm wondering how the px8s2s compare, anybody here who's tried both?