I now know the 3 systems Volvo XC90, A6 4G and MB Multibeam very well.
I would see Matrix (Audi) and Multibeam (MB) on one level. The more segments of the multibeam and (presumably the HD matrix) make themselves felt in a better horizontal resolution. The segments are a bit finer, but you can clearly see steps when cornering and masking out. How exactly you want to mask out the front man is done by the addition -HD. I think that is irrelevant in practice. It is more important that the outside areas remain illuminated. All systems can do that.
AB-Licht MB and Audi can do this much better than Volvo. The Volvo drives with a slightly raised beam of light, which is somewhat improved for the low beam. Audi and MB are already illuminating the edges with full force. MB omits the opposite lane, while Audi also illuminates that. The error rate is not extremely high, but it is also not negligibly small that one can do without the "control".
The steering anti-glare lights of the Volvo (MB, Audi) are clearly superior on the country road, especially in tight bends. However, the Volvo's 3 level light switch sometimes has too little power when the "Ultra" high beam LEDs are not activated.
Lots of highway: clearly Audi and MB Matrix.
A lot of country roads and rather tight curves: Volvo Matrix is better.