No he isntDiddy is 5"7 though
Yes, height matters in some situations but some people are just freaks of nature. Mike Tyson was 5'10 and knocked out people that were 6'0. DJ is the shortest fighter in MMA and regularly manhandles anyone between 5'5 to 5'11.
The DMV has the shortest guys in the country and when I was in Oak Hill I saw a guy 5'3 beat up a gut that was 5'9nand cut his pinky off.