Likely reason for exclusion:  As detailed in "Black Boy Fly," Kendrick was once jealous of his old Compton neighbor. And Game showed him love and put him on. So as Kendrick claims his turf, hometown heroes are exempt. 

Less likely reason for exclusion:  Kendrick doesn’t want Game to diss him in "500 Bars." Who has time to listen to 500 Game bars in 2013?