A huge difference on track between an F1 car and Bike, it was Robert Kubica the former BMW driver who competed with his BMW against Ruben Xaus driving BMW S 1000 RR.
Robert Kubica was one of the most talented drivers of his generation as Alonso said years back: “Kubica is the best of our generation.”
A drive on Rally cost him a lot, he missed a season and a seat in F1 after what happened on rally.
However, he won his first Grand Prix at Canada back in 2008, he managed to be on podium 14 times during his career.
On the other hand Ruben Xaus is a bike racer, he competed in Moto GP, he spent just two season in 2004 and 2005.