Sample size not only for time, but for amount of stats used. They presented multiple stats that spanned multiple seasons, you picked a single stat from a single season.
I used Offensive / Defensive Win Shares and Offensive/Defensive Rating to conclude that Butler >>> LeBron last season.
What other "stats" did they use... +/-
Multiple stats spanning multiple seasons. You're welcome to present an argument for jimmy butler being a superior player then lebron last season if that's what you'd like to do here, in sure I'll have a hard time disputing it