Realizing that you are being humorous, he really does suck as an owner. Actually it may not just be as an owner, but more of a meddling personnel director/general manager.
I was unfortunately married into a family of Cboys fans, my wife one of the worst, and I am always trying to explain to her the vast differences in the two teams (NE and DAL) and the way that they do business on and off the field. The management of the salary cap is one of the biggest topics that we go back and forth on, and it's no coincidence to me that DAL has struggled in a major way since the implementation of the cap.
If Jerry Jones could simply admit defeat as a poor general manager, he could possibly make a decent hiring of someone who is more serious, has better talent in his field, and more experience. That could possibly carry over to his roster in terms of discipline, attitude, and work ethic, which could possibly single handedly solve Dallas' issues and move them forward.
So, yes--he definitely sucks as an owner