You are partially right there. While Tata might know some leagues and players, he does have a large network of coaches and agents that he has worked with for a long time and has established a source of players. Something that very few MLS coaches or SDs do
Tata's reputation was probably the most important factor in pulling the likes of Almiron and Barco. He had just wrapped up stints coaching Barca and Argentina, players want to learn from a guy like that. Nobody wants to leave home to play for Chris Armas.