TT Weight Outer Ring vs VPI Ring

Hi guys,
I am certainly no expert on turntables and their tweaks, but could it just possibly be the difference in the weight of the two rings that makes most of the difference in their sound? More weight equal more resonance dampening? I've experimented with different record weights and clamps and have found the heavier weights make the most improvement in the sound, at least on my 'table anyway. I guess an argument could be made in regards to what material the weights/rings are made out of as to which is superior in resonace dampening but who knows? I'm not sure. Any thoughts on this?

I have a TTW copper ring; 600 gram one I think. I used it at the same time as a VPI ring. The VPI, being much heavier, flattened warps better but I thought the overall performance was fairly close. The VPI is quite heavy and harder to use than the TTW. Since I am a VPI dealer and not a TTW dealer I am not biased against the VPI, it does a good job. Either will improve the sound of most records.

I am having some significant woofer thumping issues with my system.
The problem is excentuated because my phono preamp goes down to very low frequencies. Older arc pre didn't do this. Records that appear flat have just the slightest difference where you can see a slight gap between the platter and the record. It reduces significantly as the arm gets farther into the record. This even pumps on flat blue note 45s - sped

I have two options - reconfigure the roll off on the pre or buy a clamp for the table

I have a galibrier gavia table. Triplaner vii arm
Doshi alaap preamp

Thanks for the insight