Overall Tyra herself to me has left a better legacy. Her brains and business innovations impacted the world. With ANTM she pulled a Simon Fuller/Simon Cowell old wrinkly white man move selling a franchise all over the world and getting a creator's credit and cheque.
She makes money every time Romania or Sri Lanka copy her concept. Tyra's talk show also was ahead of its time.
Naomi is bigger in fashion. Her face and image is more iconic.
But Tyra's legacy beyond her mug or name >>>