His efficiency rating jumped from 137 to 169. He was at 128 as a sophomore. His yards/attempt jumped to 9.3. He regressed on that statistic from sophomore to junior. He was also a 2nd team all-American and his team won 11 games versus 6 and 5 as a junior and sophomore.
You need to rethink your conclusions. The stats don't support a quantum leap from sophomore to junior year.