Mookie:
wRC+ 199
WAR 6.4
OBP .444
SLUG .682
OPS 1.126
wOBA .466
ISO .328
Trout
wRC+ 184
WAR 6.4
OBP .450
SLUG .599
OPS 1.049
wOBA .434
ISO .292
Plus they have equal offensive value per Fangraphs and Betts wins baserunning and defense. In 19 less games. Betts has been better than Trout.