No it doesn't because Conner could get Koed in the first round because of lack of Boxing skill or go 12 rounds then slip into a coma or go 6 rounds and stop because the's a genuine risk of him going blind due to damage to his eye, all of these are a few outcomes because the damage dealt in a Boxing ring is more concentrated. Your logic is based off very basic thinking in how a fight and a boxing match works you're simply claiming well a kick, he can last this long blah blah etc.. when in actual fact Conner can very well recieve far more damage in a Boxing match because of a number of factors. You're arguing Conner can't get as badly beaten in a Boxing match when the truth of the matter is he could end up just as bad or even worse and the Boxers I named earlier highlight this.
Trust me Boxing is a real fight try going out and picking a fight with a trained Boxer like many have, most never even manage to hit them before being put to sleep in seconds.
A trained boxer cant beat a trained mma fighter in a actual fight , in a fight conor would kick and take floyd head clean, 1 or 2 kicks in the legs he would want to quit.