I would say that the cruelty in either is worse, psychologically or physically.
I was about ten in South Africa, the kids next door started a stone fight, we retaliated, and it got a bit out of hand, lobbing mud clots over the walls of each other's houses.
I got really stressed, trying to sweep away the mess for hours, while Mum & Dad were out after work (we were pretty much latch-key kids).
Went to bed exhausted, job half-done, to be woken from a deep sleep by my parents telling me to "Get my swimming trunks on".
Diving in and out of the pool for an hour in the dark retrieving stones and mud, finally thinking it might be all over when Mum gave me a hot bath.
It wasn't over, this was followed by a deranged thrashing that lives in my memory as the worst I ever experienced.
I couldn't ever imagine even coming close to inflicting that kind of cruelty, physical or mental, on my kids.