I use my 1140 gearing as follows
high range...pulling nothing, seeking speed...often it is too fast to use in the pasture, max is about 25mph on flat asphalt
medium....almost all the time I use it...up hills and with a trailer behind it....total weight pulling is at least 1000 lbs. max is about 15mph
low...if I stop on a hill with the trailer, this is what I need. Also, what I use when pulling heavy loads...just pulled a load of brush out of a 16 foot trailer in low 4 wheel drive, couldn't even feel it.
I have also used low 4 wheel drive to pull a 1000 gallon metal trailer full of water...you do the math...it's heavy...up a reasonable slope...yes, I got a run at it first.
My net...the tests are all done on roads and with people joy riding around with the need for speed and bumps and getting thrown around with seat belts on. Not me, I spend little time on the ranch roads. I USE the vehicle, it carries all sorts of stuff, including people, and moves trailers around well. I've pulled dead trees down with it, pulled windmill towers from horizontal to vertical with it. The engine does not bog down, lose traction first...and it's a heavy vehicle with aggressive tires.
The 1140, seems I recall, has a few more horsepower than the lower models of RTV...the diesel gives you torque and HST gives you reliability and smooth operation, easy driving, easy steering because hydraulic power is already available.
I think you need to think thru what you will use the vehicle for...it's toughest job...then set that situation up and see if you can test drive the RTV and whatever other vehicle under those conditions. Something like a trailer load of wood....or pulling several trees out of the woods...
Net, if you are trying to win a speed race, then the RTV isn't your vehicle...however, if you are planning on working it then it is worthy of consideration.