What is the difference between the John Deere 6120E Cab and 6120EH?

Here is how the John Deere 6120E Cab and John Deere 6120EH compare on John Deere's published specifications:

• Horsepower: John Deere 6120E Cab 120 hp vs John Deere 6120EH 120 hp
• Pto horsepower: John Deere 6120E Cab 102 hp vs John Deere 6120EH 102 hp
• Weight: John Deere 6120E Cab 10240 lb. vs John Deere 6120EH 10240 lb.
• Fuel capacity: John Deere 6120E Cab 44.4 gal. vs John Deere 6120EH 44.4 gal.