Considerably longer than the others. But as pointed out environmental factors play a huge part.
Direct Line Of Sight any of these radios should be good for 1.5Km - scratch that - 1.5 to 3 MILES. Anything with wood, water, dirt or metal in between reduces that significantly.
The radio in the Jumpers are configurable for output up to 600mA - this is 6x the output power of the others.
"technically" you "should" have a "special" license to use anything above 100mA and this power level can be changed per model

(it's called TX Power if i remember correctly.)
Either way - direct line of sight - my eyes can't see my planes THAT far out