The majority of VAG cars should be RR'd in 4th gear, as its the gear which gives the ratio closest to 1:1 (ie engine spins at 4000rpm and wheels are turning at 4000rpm) so it gives the truest reading of torque (and power as it is a calculation of torque). So running cars in 3rd gives a higher (but false) torque figure and higher power figure, so the figures aren't worth the paper they're written on and you money has been wasted.
As said, peak power should be higher up the rev-range sometime after 4k as it gives you much more driveability, its only really alright at 3.5k if you are only motorway driving (but then whats the point of tuning for sitting at a steady speed!). Even standard peak power is at just over 4k!
Anyway, rolling roads weren't designed to give figures on a piece of paper, they are for live mapping and tuning, fault diagnosis and engine running-in. Only when someone realised they could make money from a few calculations, they started making figures for torque and power.
Best way to see how 'good' your car is, is to take it down the 1/4 mile strip, who cares if you have 10000000bhp, if it all comes in one burst its uncontrollable and wasted, I would much prefer 100bhp thats a nice smooth delivery!