JohnnieB forwarded me some interesting data from Trojan Battery. They have a lot of good info on their website and if you send them questions they send you more
The information he sent to me contained some infrared photographs of battery terminals under load. They had made a comparison between a crimped on cable lug and a soldered on cable lug. Their infrared photography was showing how the crimped connection was hotter and was actually raising the temperature of the battery post compared to the soldered connection.
Some more food for thought for the never ending debate of cramped versus soldered connections.