“Make, model and year of mfg. would be helpful. One would think that an evil SUV would be the match of a one ton truck.”
Many popular early SUVs were based on 1/2 ton pickup chassis. Some still are—Tahoe, Yukon, etc.
Others are based on car derived unibody chassis.
Few would be the match for a one tone truck, everything else being equal, which it is not.
Direction of impact, vehicle weight, speed, safety features employeed effectively vs. absent/ not effective.
A lot of variables. I was hit nearly head on, and gained respect for serious collisions immediately-in the ambulance ride to the emergency room.
The other SUVs are based on increasing tinfoil as they go down in size. So the question is still: Make, Model, mfg year.