I'm not familiar with TCU's program, but I did apply to ASU and FSU for their rhet/comp programs this year. I ended up receiving funded offers from both schools. My general impression of FSU was that they had a very active department with lots of opportunity for collaboration, but I was concerned about the lack of variety in their course offerings. I ended up choosing ASU because I think there's a lot of exciting work coming out of the program right now, and I feel confident that I can hold my own in a large program. Leaps and bounds better? I don't think so, but I don't pay attention to rankings, so others might have different opinions. Bottom line, if you've narrowed it down to these three schools, I would consider visiting them and talking with faculty and current students to get a good impression.