What is the fuel capacity difference between the John Deere 6R 120 and 6120E?

The John Deere 6R 120 has a fuel capacity of 52.6 gal. and the John Deere 6120E has a fuel capacity of 44.4 gal., a difference of 8.2 gal. The John Deere 6R 120 has the higher fuel capacity.