I'm getting completely different numbers than you are. Idk if my calculations are incorrect or not. Would you care to share? I want to see where I went wrong. I've included and assumed the distance traveled post impact and am neglecting air resistance. I'm still getting an impact force of 406111.9943 Newtons and a work of 731001.5898 Joules (assuming the height of the gorilla to be 180cm).
Im going to defer to you expertise here, because it seems like you are using the real maths while i was utilizing broscience
regardless i think kamikaze brocks could win the day so to speak
sheer numbers wise the brocks have a shot