I spent the morning doing some simulations on the virtual model and it comes out that is a lot more important where you attach the sway bar in these cars. Here is a brief example:
Both cars were steered at 5 degree to the right. Both cars were “rolled” at 3 degree first, then 5 degree, just to see what the progression is.
(Note – this is not final numbers as I have to yet position the pickup points in their exact locations, but it is approximate, within few millimeters. More accurate data will come later)
differential between left and right pickup points for 3 degree roll = 0,08 mm
differential between left and right pickup points for 5 degree roll = 0,19 mm
differential between left and right pickup points for 3 degree roll = 1.69 mm
differential between left and right pickup points for 5 degree roll = 6.63 mm
As you can see, from even some rough estimates, the differences in differential between the two cars are very, very high. Looks like, actually, the TT 19 mm bar, twisted this much, would do a lot more than the even beefier Golf bar that is twisted this little.
Basically, the pickup points they took move in a very, very different way (OE A4 vs. TT), so we need to actually do a graph with every degree of roll and every degree of steering as to get full picture.