Buster
You are correct with the can types.
One of the main reasons TN accepted the A300B4 over the 762 was they could carry LD3 cans side by side where the 762 was limited to LD2's.
This gave them an immediate advantage with International freight forwarders as cans could be transhipped with no repacking or double handling, and we all know freight pays better than passengers. Wise move too. They served long and well and are now converted to freighters for Fedex I believe.
Still have a "Now there's a big difference" T shirt somewhere in the polishing rag bag.
Best all
EWL