Are you suggesting then that Timeline is more successful with DD than BD?
I think it depends on the Designer. Based on that discussion I remembered an audiophile buddy with a Platine Verdier Turntable. The last time I did visit him I asked about his speed alignment...lots of Verdier owners think about external motors, the kind of string, the material of it, the length, running the motor 24/7/365 and so on....he did nothing :-), except buying a Vibraplane.
Anyway, I made a date for a alignment Party packed some stuff, Digital Gauge, Timeline, Camera, Carts and we started first with listening a record without doing any corrections.. and we also made some cartridge rolling ...
... we found another turntable Design which has a rock solid red dot on the wall and we also were able to hear differences with several carts :-)