Tarver was better than McCall.
He was consistently one of the very best at 175lbs. He beat Jones Jr 3 times in my book. He avenged his losses to Johnson and Harding and beat Clinton Woods and Griffin.
He was the unisputed champ, I think he won about 5 world titles in that weight class in all, a 3 time world champ.
He's far above Oliver McCall. He ranks with Coralles, Castillo and Hatton imo, at his best, was the number 1 in his weight class, and even after losing, went back and regained hist title.
Bookmarks