420bhp is not the problem, its the torque figure that triggers the wheel spin, that why they have tuned the car in that way.. (notice the low torque figure)
I think that would be perfectly drivable with an LSD and sticky tyres..

Heres a quick video of my S3 with 417bhp & 356ft/lbs
Granted it had 4wd but gives you an idea of the acceleration, from 10mph in 1st to 7000rpm in 3rd!


Jonny