Think about a turntable as (2) parts, 1 is mechanical and 1 is electrical. Platter speed & pitch stability are more mechanical constants for any good quality turntable be it direct drive, quartz-lock or belt drive. The other part is electrical which is driven by the phono cartridge, the mentioned cartridges some sell for more $2K and if the tone arm has too much friction and/or lacks the proper matching compliance for the cartridge it will not track properly. Since the cartridge is a transducer similar to a loudspeaker, it tracks physically and converts to electrical output. If the cartridge is not matched with a well-designed/tracking tone arm, its sonic performance will be lacking. To counter this some tone arms like the Jelco SD-750 has adjustable oil-damping built into its bearing system.
Note that we do know a little about the 1200G as we know Ito-San quite well, who is the CTO for Technics products based in Osaka, Japan.
Just my $0.02...