book times for 0-60 are slightly quicker on a VTS, it weighs about the same as a MK2 16v but peak torque and peak power are lower (would be interesting to compare the torque curves).
They seem pretty evenly matched in a straight line... but then who cares. If he feels good about himself, driving a superchipped VTS then fair enough. To be honest if he feels so good about his superchip and blags about it all the time, then a Saxo probably suits him.
Of course there's also a chance that the 'Superchip' has pissed all over his fuel maps and timing.