T-Rex's are overrated animals. People think they're badass, for literally no reason. T-Rex can not attack with their claws, they can't grab anything, don't have a sharp tail, cant't hit you. T-Rex only have one method of attack, using their one mouth. Crocodiles are a joke to anyone who knows how to fight them properly for the same reason. If you deal with their one mouth they're so utterly harmless that even drunk southern yocals can wrestle them and win. That's not the same for the Queen, who has up to four angles of attack, meaning that Kong has his hands full.
I don't think he can't do it, beating up bitches like the Queen is what he does best, but I'm just looking for a good counter-argument to that is all.