What is the weight difference between the John Deere 8R 410 Tractor and 8RT 410?

The John Deere 8R 410 Tractor has a weight of 28000 lb. and the John Deere 8RT 410 has a weight of 34400 lb., a difference of 6400 lb. The John Deere 8RT 410 has the higher weight.