I think we should divise this debate in categories : best at this, this and that. That would be more interesting, don't you think? ;shrug:
Even if i agree with Agent Zero that the rankings are far from being everything yet I don't think there's any French player who is the best absolutely. If one can be during a period of time, he'll never be the French number one absolutely or if so, we'll only know in a lot of time.