What is the difference between the John Deere 6R 260 and 7R 270?

Here is how the John Deere 6R 260 and John Deere 7R 270 compare on John Deere's published specifications:

• Horsepower: John Deere 6R 260 256 hp vs John Deere 7R 270 266 hp
• Pto horsepower: John Deere 6R 260 210 hp vs John Deere 7R 270 224 hp
• Weight: John Deere 6R 260 21716 lb. vs John Deere 7R 270 25133 lb.
• Wheelbase: John Deere 6R 260 114 in. vs John Deere 7R 270 115.2 in.