IIRC, statistically he only lead on WS and steals. Tim, Tony and Manu largely lead on every other significant category, raw and advanced. Points, assists, rebounds, PER, WS/48... which is not surprising, seeing they're the players with the highest usage rate, and play the larger roles for the team.
I don't really have a bone to pick about Kawhi, he was great and stepped up in the highest stage, which is what you would want of any player. You won't hear me complaining or dragging him down to prop up anybody else.
I do hope Pop does give him a larger role going forward, right now his usage % ranks him as the #4 option on the team.