Hello,
all Outhouse stats have many effects on many HCL events:
Foreplay: helps getting better buddies, give a 20% stamina bonus in CF if bigger than rival, determines attacking order in battles and raids
Stamina: is ur resistance on CF, and too in battles and fights
Technique: is ur power on CF, and too in battles and fights
But OH stats are only some of all variables that influence on all events, others too importants are:
mojo, cash, excitement, cock lenght, gang rank, trophies earned, skill points distribution, guards, weapon, clothes, car...