Here's why he will lose- A one dimensional fighter that never bothers to evolve ( or doesn't have the time) usually loses to most legitimate opponents who are versitile and well prepared. Brock isn't going to waste his time going from a pathetic striker to a below average one. That would require time and effort. All he's going to do is what he always does-- wrestle and lift tires; not do any real sparring, handpick all of his trainers so they don't mouth off or push him and expect to use size and strength to finish fights. As soon as JDS makes it out of round 1, Brock is finished. And to tell you the truth, all JDS as to do is work on stuffing takedowns and getting up--- thats all-- and he will win convincingly.
Brock can't strike, he can't submit, he doesn't handle adversity well, he's lazy, he's slow, he can't take a punch and he has one foot out the door. As soon as JDS rocks him, he is going to fold like a cheap suit, or run the fuck away.