Right you are. An adolescent chimp has the mentality of an angry two year old and the strength of six men. A gorilla is less likely to attack though they will if provoked.
Gorillas generally try to avoid confrontation in the wild while Chimpanzees often initiate confrontation.
I was watching a show a while back about great apes and almost every single time the silverback male would show himself and beat his chest to an invading group but it was generally done at a fair distance. Usually the invading group would back off.
With chimpanzees they all get involved in getting in each others faces and are pretty quick to go to war.