I think you’re overlooking some things, there. Just looking at the largest 2R (2038R) vs the smallest 3R (3033R), here’s some numbers:
Front axle capacity:
2R = 1940 lb
3R = 3197 lb
diff = 65%
Rear axle capacity:
2R = 2400 lb
3R = 4079 lb
diff = 70%
Hydraulic pump:
2R = 9.3 GPM
3R = 15.3 GPM
diff = 65%
Wheelbase: same (good!)
Turning radius: 3R better by 5%’ish
Ship weight:
2R = 2436 lb.
3R = 2900 lb.
diff = 19%
Filled rear tires (turf):
2R = +470 lb.
3R = +684 lb.
diff = 45%
Loader lift cap@59”:
2R = 1296 lb.
3R = 2125 lb.
diff = 64%
Bucket curl time:
2R = 4.76 sec
3R = 2.96 sec (that’s where the big GPM pump helps)
diff = 61%
There is no doubt the 3R is a much more capable machine, if that’s the requirement. That’s not to say the 2R is bad, I liked the ergonomics of that machine better in many ways, but there is really no comparison on weights and capacities.
As to the 1R vs 2R, it depends on which 2-series you’re considering. That is screwy, since they have the “little 2” and then the “big 2’s”. I’m not even sure why they called the 2025 a 2-series, it has nothing in common with the 2032R or 2038R, but I guess they needed some way to distinguish it from the 1025. The 2032R and the 1-series tractors are substantially different, tho.