Kawhi

Averages: 26 points 6 rebounds 3 assist

Shooting Percentages: 49% overall, 38% from 3

LeBron  

Averages: 26 points, 8 rebounds, 9 assists

Shooting Percentages: 53% overall, 39% from 3

Defensive Real Plus Minus

Advantage LeBron

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Cavs average scoring margin per 48 minutes with LeBron: 

+9.40 (Above San Antonio, Below Golden State)

Cavs average scoring margin per 48 minutes without LeBron:

-8.63 (Below Brooklyn Nets, worst in NBA)

18.03 point difference

Spurs average scoring margin per 48 minutes with Kawhi:

+9.06 (Above San Antonio, Below Golden State)

Spurs average scoring margin per 48 minutes without Kawhi:

+6.32 (Above Cleveland, Below Houston)

2.74 point differential