Apples to oranges

 

No idea why they continued that race for that long. Did the M56 driver think the IS-F will run over a banana peel or something? Did he have a red turtle?

 

Go ahead and show your buddy that video so you don't have to waste any gas beating him later..

 

The F had his "fast" in the car

 

I was thinking the F would just walk it but RAN away from it...LOL. To the OP, trust your F and learn to drive it and you will, not only WALK but RUN away from it.

 

You have to factor in a lot of things, such as amount of gas in the car (a full tank easily adds 100lb), amount of people in the car... driver obviously. On paper, the M56 and ISF are neck and neck since the M56 has more HP/TQ but is also heavier.

Not to turn this into a racing thread, but take it from me, I've beaten an E92 M3 coupe before by multiple car lengths on every single run... 20-100mph, 40-120mph, 60-140mph.... and we were both stock.

Again, on paper the M3 and ISF are neck and neck, so when it comes to "who's faster", it all depends on the driver and a variety of other factors.