The gas engine comes on later in the revs and pulls a little more. Even at around 65, stabbing the throttle can cause a downshift into the 3rd gear power band for that passing situation. The diesels with their 600 rpm lower hp peak really don't downshift above 60. Most people are more familiar with the behavior of gasoline engines and will like the 350. It does what you expect.
Diesels are a different breed.
It has a much more flat power curve and requires the driver to plan ahead. However, fuel is more common and easily found. Some would also claim the gasoline motor with its high tension system are less tolerant anyway. They are still quite capable and should not be considered a handicap by any means. The new extended cab 2 door is quite spacious with plenty of seat adjustment.