see if they compensate that in chassis when changing from multilink to torsion beam.

It is not just about the suspension system, it is about the chassis also.

An example of Wira suspension system is good unfortunately the chassis sucks in too soft to begin with.

yaya... no doubt that wira is comfort but not for you to go send taufu.....
evo3 should be our wira? i do have doubts if their stiffness are the same though...

anyway to change from one suspension setup to another, compensation on chassis is a must.

an example is if you compare
toyota corolla last gen with 4 speed
to vios last gen with 4 speed
to city last gen with 5 speed... (not the after gen due to that's the last with 4 disc brake)

then you will catch the point that chassis design is fairly important.

That vios is a happy tail