I've been following the program since 1999. I have not seen a Pirates team this in sync defensively (and on the glass) in my time. My guess is you have to go back to the early-mid 90s to find a Hall team this solid defensively.
I know we had better defensive efficiency numbers in 2011 but this group is more polished and well-rounded defensively. The rebounding, especially of late, has been fantastic too.