Do you mean to say that Sarkozy has a good debate reputation?  Talking fast and telling people what they want to hear is what a salesman does, not a President.  From what I've seen of Bayrou he speaks very naturally and in simple enough terms to be understood even by someone with limited ability to comprehend spoken French (me).  Perhaps this is very bad but it does come off as "real" in way that Sarkozy and Royal are not.