Mercedes W07 vs W10 in Degner 1

Anybody with technical files existing how/why the roll on the most modern automobile is so out of the ordinary less?

I know that stiffening suspension/anti-roll bars to in most cases originate a automobile corner flat has incessantly been conceivable, but at the expense of understeer. I.E – the W07 might perchance reasonably without misfortune had been made to hold as dinky roll because the W07 but would hold skittered off the music.

So what are most modern gen F1 autos in a feature to attain in define to enable them to drag this form of stiff setup?