Suspensions on turntable...really effective?

I use a "vintage" Linn Basik (Akito) with no suspension to speak of except the large rubber hollow feet it sits on (the turntable is on a light but stable little table of its own, as per the Linn instructions!). I recently obtained a second REL sub and it's about 4 feet from the turntable, all on a classic potentially bouncy wood floor. The result is zero footfall disturbance, when I touch the side of the turntable when blasting something no vibration is getting through (at least that I can feel by touch)…and the damn table sounds great and plays beautifully. I keep threatening to replace this table but it works so well I can't get rid of it.

The bass produced my Linn Basik/Akito rig is astonishingly good…why? Is it the Mogami din plug cable I put on it to replace the original that had actual rat bites (!) through to the wire? Is it the Sumiko Pearl cartridge that was embarrassingly inexpensive by any elitist geekdom standard? The relatively el cheapo (a pattern…I see a pattern here) Cambridge 640P/Pangea P100 (power supply) preamp? Why? Why?