None of the current grid have REALLY shown an ability to beat Michael. Alonso's domination at Hungary 2003 was impressive, but tainted by the Michelin sidewall saga.
Although I'd like to believe it, I can't convince myself that there is someone within the current field that would beat Michael given exactly the same equipment.
With some new blood entering in 2004, I'd like to see Klien do well. The first few races will define his future - if he can outqualify Webber, or beat Webber in the race, then he's definitely future WC material (and I rate Webber very highly). I guess I'm on a bit of a Klien supporting streak at the moment