Just an obsevation from a guy who has always ran horst link rears. The feel from the horst link was always a firm pivot around the BB with the rear axle doing the travel. I noticed almost instantly on the
VPP, that the feeling is more like the rear axle is stationairy and the travel happens at the BB. I know it's just a small amount of movement at the linkage but it's very noticeable on the bike.