all the big legit ( NCAA DIV 1/OLYMPIC) caliber wrestlers like coleman, kerr, erickson, randleman, couture ect all did well in mma in the begining, when you have these big, strong athletic wrestlers getting into mma they usually do well just by using thier wrestling. i know these days you need to be well rounded but brock has very good hands for a guy who never boxed, his hands are heavy as hell also. brocks still a puppy in this game, when he gets his jitz game up and his striking more crisp lookout. he may not always hold the ufc hw belt cause anyone can and usually does get beat with the belt (providing thier putting it on the line at least 2 to 3 times a year)but he will be in the title picture for sure for the next 5 years or so imo, hes championship material whether he has the belt or not.
as long as he stays hungry in mma and keeps learning he will either have the hw belt or be in contention for it imo, the dudes a athletic freak in the same mold as GSP but just 100lbs bigger