I think both are great recruiters/coaches, but I give the edge to Patterson for pulling recruits from the other Texas schools to a school without a long football history. Stoops also pulls from Texas, but until recently, he had the state of Oklahoma locked down since the other OK schools weren't that good. You have players who have grown up hoping to play for OK their entire life, which I just don't see for TCU.
Plus you have the old U of Texas adage - "OK has the best Texas players money can buy..." jk