i bet most people off here could answer your questions
er, with respect, and i include myself in this, perhaps not ) have a play on fs-kinematics for a while. it makes you realise how most of the speculation and advice given here on FS is based on rider experiences of one version of a system, not the physics of the kinematics themselves which tbh are mind-bendingly complex unless you are a maths genius as well as a good, analytical rider. a pivot tweak of 10mm can make a great linkage into a rubbish one. in one area. then you have to look at all the other variables.
it’s not simple at all, there are only 3 or 4 basic systems, but the minor variations on the themes make all the difference. you can’t just compare 4-bars to single pivots.. well you can in very general terms but that’s about all.