Board Thread:Boruto Discussions/@comment-32952945-20180120194256/@comment-1458758-20180121025506

While his combat skills and degrees of his decision making are on the level of chunin, what he primarily lacks is experience and judgement. While he might tactically make the right moves, like scouting out, he wasn't smart enough initially to see through the bell test ruse and work with everyone. Similarly so, while his combat skills might be chunin level, he still hasn't been tested enough in real combat to refine them into workable forms like Itachi or Kakashi had by his age.

To put it simply, his skills are chunin level, he is not there yet.