What is the difference between the John Deere 6M 130 and 6135E?

Here is how the John Deere 6M 130 and John Deere 6135E compare on John Deere's published specifications:

• Horsepower: John Deere 6M 130 129 hp vs John Deere 6135E 135 hp
• Pto horsepower: John Deere 6M 130 100 hp vs John Deere 6135E 102 hp
• Weight: John Deere 6M 130 13889 lb. vs John Deere 6135E 10240 lb.
• Fuel capacity: John Deere 6M 130 54.2 gal. vs John Deere 6135E 44.4 gal.