This is completely my thoughts and may not be fact at all but Mercedes/Dodge/Freightliner owned the market at first. Ford and Chevy could not compete with the new high top diesel that was released. The Sprinters did not have to try hard to take over the market. Well along comes Nissan with their abomination of a van. Sprinters were unphased. Well then Dodge released the promaster which is utter garbage and Sprinters held their title and complacent attitudes. Now ford has had years and years to study the market and bring to the table what everyone else has been having trial and error with for the last 12-14 years in the American market and really hit the nail on the head.