Dear Halcro, yes, but that is not in any way an empirical test or proof. The Raven is relatively bass-shy and in any case, a relative comparison between the "nude" DD and the Raven is no more than that: - a relative comparison between two TTs.
See - no matter whether you have a TT with a plinth or a "nude"/skeleton TT - you always have a "plinth". With the "nude" TT the surface/corpus underneath the motor and the armbase IS in fact the plinth and does act as one.
Please do seriously consider giving a thought to a complete force vector diagram of the turntable system and you will immediately see the point.
And BTW - the spinning platter is of course part of the force vector system. But nevertheless, the tonearm/cartridge do form a mechanic-dynamic system and the two together with the plinth/underground do form a mechanic system.
Cheers,
D.