You confuse Kurds with Turks. It is the Turks who are the tomato sellers.
Sintashta folks were just the weakest link. They were morons and were defeated by the Mongoloid people and later assimilated into their DNA. Like Darwin said, the weakest races loose and the strongest one survive. The retarrd Sintashta folks had nothing to do with more mighty Iranic/Aryan people who later found many mighty empires on this planet.

