LOLZ ITZ A CHALLINGE INNITZ
Tom if your tongue was any deeper I bet you could taste the evening meal.
The problem people have is that they are obsessed with 0-60 0-100 and the car itself.
I'll give you an example; R32 v 2.0 Diesel A3 remapped both travelling at 20-30 then reaching higher speeds; the assumption is the R32 will win however the gap will be very tight and the R32 will widen the gap at 100+ speeds. Now do the same from a stand still and the R32 will win with ease.
In reality it is entirely probable that you will come against a duel like this and unlikely you will constantly be reaching 100 110 120 etc.
OP; for the A4 you would have to test drive a standard and remapped one just to find out. Some people find it useless others are wow'd for years.
That Mondeo like paradigm said; it could keep up at 40-70, however even with the exhaust and induction kit I can't see it beating an ST - the video shows you set off a tad late.