His stats were basically the same in summer league last year. I don't anticipate him being all that different than he was over the second half of last season. If they make him the primary ballhandler, he might see an uptick in his stats.
2014: 5 games - 14.8 points, 4.2 assists, 4.2 rebounds, 2 steals, 0.4 blocks 29%/26/83%
2015: 5 games - 16 points, 4.2 assists, 3 rebounds, 2.4 steals, 0.4 blocks 35%/28%/84%
He showed mild improvement over the first and second half of the regular season last year, so it's not shocking that he showed mild improvement over his appearance a year ago in Summer league... having spent an entire season playing against NBA competition:
Pre All-star: 6.8 points, 3.5 assists, 2.9 rebounds, 1.2 steals on 37%/35%/67% - 24.4mpg
Post All-star: 9.1 points, 2.6 assists, 3.8 rebounds, 1.9 steals on 36%/32%/63% - 30.2mpg
In Smart's defense, he was hurt the final game so his stats took a hit... he finished #54 amongst summer league participants in total statistical efficiency. Even before the injury, his uptick in stats reflected the mild uptick he had over the second half of the NBA season last year...