What is the difference between the John Deere 8RX 410 Tractor and 9R 440?

Here is how the John Deere 8RX 410 Tractor and John Deere 9R 440 compare on John Deere's published specifications:

• Horsepower: John Deere 8RX 410 Tractor 404 hp vs John Deere 9R 440 434 hp
• Pto horsepower: John Deere 8RX 410 Tractor 310 hp vs John Deere 9R 440 335 hp
• Weight: John Deere 8RX 410 Tractor 43300 lb. vs John Deere 9R 440 40660 lb.
• Wheelbase: John Deere 8RX 410 Tractor 127.36 in. vs John Deere 9R 440 154 in.