T'Challa really could have killed him twice during the fight but didn't want to end him. He was conflicted about his father's sins. That was before Killmonger even got his first hit off.
Im watching Black Panther. If I were T'Challa the movie would have ended when Killmonger came into the throne room talking that shit. Lol. I would have been like you might be blood but your not one of us.
Watching Hercules with my duaghter. Now that I am an adult I see that it made no sense that as a farm raised boy. He didn't know how to control his strength.