Linkage design is all about compromise in various aspects, there is no “best” system, just whatever balance of compromises the designer has made.
The aspects you’re juggling –
.Suspension action – bump absorption/feel
.Anti-squat
.Pedal feedback
.Brake jack
Single pivot –
.Suspension action – linear
The more anti squat you build in, the more pedal feedback and brake jack you get. You design a single pivot in a manner that it pedals better than any other bike on the market, but you’ll have massive amounts of brake jack and pedal feedback.
Faux bar/linkage actuated single pivot –
Just like single pivot, but you can alter the suspension action/feel which in turn can reduce pedal feedback since the bike can be designed not to sit so far into the travel.
FSR/Horst link/DW link/vpp/switch/maestro/split pivotjust about anything else –
They’re all the same.
You can build in more anti squat without as big of a compromise on pedal feedback and brake jack as single pivot bikes.
Each aspect is a little more independently adjustable with a little less compromise.
So as an example, a FSR bike can pedal equally as well as a single pivot but with less brake jack and pedal feedback. You can get closer to having you cake and eating it.
So as someone said previously, it’s all about pivot location, not linkage layout.
Why would you “stand up and mash” regularly on any full sus trail bike?
One major reason, fun, a bike is a play thing.
Myself, all the time. Climbing, i get bored, rather than sit and spin, i stomp up, often finding little step-ups and things along the way. On flatter terrain, where you if you go faster than cruising, making up gaps and practising manuals is far more fun than sitting and twiddling. Going down is pretty obvious too, get speed up again at a turn exit, an extra crank to make sure you clear that gap.
I try and turn a whole MTB ride into a BMX track, since BMX is what i’ve done all my life.