>The JT8D-200 series found on all MD
-80s is a relatively low bypass turbofan. The A320's engines, and the 737NGs, are significantly more efficient.<
While the MD
-80's are lower bypass, they are also lower powered and lighter. Also, the MD
-80's frame is lighter. There really is no comparison on range and cargo carriage, where the 737/A320 win hands down.