The serious runner vs. the active walker. One is a true jogging machine; the other is the ultimate all-terrain hybrid.
If you plan to actually RUN (5km+), you must get the Thule for its fixed wheel and suspension. If you just want to walk on grass and gravel but still need to fit in shops, the GT2 is the far more practical daily driver.
Nothing beats a side-by-side push test. Book a VIP Test Drive at a local boutique and compare these models in person.