This is a discussion on Strongest anti-cheat? within the Entertainment board part of the General category; I would say it's battleeye or xingcode...
ESEA-anticheat imo if talking generally about every AC, not familiar with the two you mentioned
Might be wrong since I do not know much about ESEA's client except reading about it. Haven't investigated myself
Some sence of fair play would do it, but I guess most of us lack "feeling"
organner was detected by esea now, it looks like no pub hack can pass esea right now ?