In terms of wrestling overall I think DC is the more skilled on compared to Brock and even compared to Jones but there is a strange dynamic going on.
For example I think Brock would have a much easier time in taking down Jones then DC would have in taking Jones down...
DC goes for this clinch takedowns, trips, high crotch, single leg, chain wrestling keeping you off balance and in a constant attack and this was easier for Jon to handle with his bigger body/frame, excellent balance, leverage, his own wrestling skills, better cardio and better speed/reflexes.
Brock goes for a more straight forward classic folk style approach by shooting a double leg with good speed for a man of his size and just sheer power/size using that mass in his favor.. and he doesn't even have the best timing and he still pulls them off when he commits to them (yea he had some sorry half ass tries vs Carwin/Ubereem but I think he was a bit shook in the confidence department after the surgery and in facing big strong man that are killers in the striking).. and guess what I think this would work better vs Jon and this are the same type of takedowns that Rashad was doing vs Jon in practice and succeeding (even keeping him down if we all remember the build up to Jones vs Rashad but hey a fight is different then training and Rashad didn't or couldn't pull the trigger like in practice).
DC's chain wrestling is a thing of beauty and hands down his the most skilled wrestler from the big man.. Jones got his takedowns and "won the wrestling" based on cardio, damage done to the mid section and that early takedown that came was from a trip and Jones beying the longer man managed to snag the leg away.. in terms of wrestling DC is better then Jones to me.. problem is cardio goes to Jon, striking range, kicks, subs, overall MMA mixing it up its all Jones.