Deere 1210G and Deere 1510G are about the same length, both around 32 ft 3 in.
Deere 1210G and Deere 1510G stand about the same height, both around 12 ft 6 in.
Deere 1510G weighs 1% more than Deere 1210G: 40,190 lb vs. 39,860 lb.
Deere 1210G runs 209 hp; Deere 1510G runs 220 hp.