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

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

• Horsepower: John Deere 6120E 120 hp vs John Deere 6120E Cab 120 hp
• Pto horsepower: John Deere 6120E 102 hp vs John Deere 6120E Cab 102 hp
• Weight: John Deere 6120E 9410 lb. vs John Deere 6120E Cab 10240 lb.
• Fuel capacity: John Deere 6120E 44.4 gal. vs John Deere 6120E Cab 44.4 gal.