Exactly. It would still be possible for truly skilled players (e.g. Nferno, fear_tetsuo, etc.) to get a substantial lead by beating the top 25 people with this system, but the point is, there's more in it for them to want to fight you in the first place. It's a win-win situation.
Plus, I think it would inspire some serious competion with the people that are the most active (the top 50).