the "luck" stat isnt actually measuring "luck". Its "the metric is saying this, but the results are saying this". To me, a good reason for that difference could be that the team isnt as good as the KP thinks it is.
Im sorry, no team with the kind of droughts we see routinely in games of several minutes without any sort of scoring, is a top 10 offense. I know some people treat KP like its some sort of basketball deity, but its not perfect.
That really doesn't make sense though- our terrible luck is resulting somehow in a really high offensive ranking? I could see that if our luck was tremendous.