Basketball reference goes back to the 97-98 season, and the answer to my question is that guys just don't have seasons like Russell is having. I searched all players, all classes, all conferences, and nobody has put up those numbers across the board like Russell - the elite 3pt shooting being what separates him. But even take out the three point shooting, only two guys have averaged 20, 6 and 5 over the last 17 years.
Jerryd Bayless probably had the most similar season his freshman year to what D'Angelo is doing this year. Although D'Angelo is just a little better all around performance.