No disrespect, but working with old F1 cars driven by gentlemen drivers doesnt really cut it against professionally run teams in professional series.
Weight, after tires, is the single biggest effect on a car. It affects the braking, acceleration, and cornering. The braking difference is mainly one of the weight of the rotor, not the coefficient of friction. The weight difference between CART and F1 at Montreal accounted for 3.5 seconds. Those are the exact and direct words from Peter Gibbons, chief eng at Newman-Haas. So if you dont want to take my word for it thats fine but I dont think you can liken Mr Gibbon's information and experience to reading autosport in the john.
If you want a proper article on CART vs F1 technically at Montreal check out
http://www.atlasf1.com/2002/bel/preview/stonefeld.html or if you dont have a membership get it from
http://ross.stonefeld.com/atlasf1-20...-stonefeld.pdf It was put together with the assistance of the Newman-Haas engineering and marketing teams, so its not a spin piece for F1.