No, that is last year's data, not this year's.
He does list players by offensive efficiency. He sorts players according to how many possessions they use, due to the theory that it is easier to have a high efficiency if one rarely shoots and rarely generates assists. For example,
click here for the offensive rating for just B10 players from last year.
There are essentially four leaders, based on usage. The list shows the Offensive Rating, with the percentage of possessions used in parentheses. The first grouping are for players who use at least 28% of their team's possessions when they are on the floor (i.e. whenever that player is on the floor, at least 28% of possessions end with said player shooting a FG or FT or TO or assist.) Evan Turner was the leader in this highest usage grouping with an Offensive Rating of 108.5. Note also how much higher his usage was than everyone else.
Leuer was the leader by a wide margin of the next group that used at least 24% of possessions. Hummel was the leader of the next group, that used more than 20%. And Hoffarber was the leader by a wide margin of the last group, that included all players, with an offensive rating of 131.7, while using 14.4% of possessions. You have to consider usage rate together with offensive rating. The offensive rating takes into consideration how many points you generate based on the number of possessions used. Things that hurt: missed shots and turnovers. Things that help: shooting a high percentage on field goals and free throws, offensive rebounds, assists, low turnover rate.
This system is becoming more mainstream and a number of commentators such as Luke Winn and a few others now use this.