The Agressor boat also was "further back" on the dock and out of the incoming wind and current/storm surge.
The WaveDancer bow protruded past the dock and into the incoming wind/wave/storm-surge. There are diagrams of the tie up in the IMMARBE report (page 81)
from
IMMARBE - International Merchant Marine Registry of Belize
IMMARBE Report on Wave Dancer
One of the things that I couldn't believe after all this happened was that Peter Hughes, Inc filed a lawsuit against the Agressor Fleet claiming that the Agressor boat is what caused them to break free from their moorings. I thought that was a pretty low blow....
EDIT. I found the pic online