Which wins the traction war, in straight line, in open track?

I'm assuming the R888's beat the corsa-r hands down, I ran the corsa-r and it was a great street tire, improvement over MPSS's, but not impressed on track outings or straight line grip.

For those who know, if you're replacing your kumho's, is it another set, or mover to R888's ?

Thx.