I actually compared the Gyro with the VPI - was using the Benz L2 cartridge if I remember correctly. There were a few different cartridges at the time of that audition (some Ortofon's and Benz's), but the L2 was my favorite. The Gyro had an RB300 tonearm with the Tecnoweight and VTA adjustment sleeve, the VPI in that audition was an Aries Black Night, with the 9 inch VPI tonearm.
The Gyro was also compared to the Oracle (in my home), but that was a Mk I.
The Mk V Oracle I have heard in numerous different setups, but never with the L2 cartridge, and not in the same system that I listened to the VPI. I have also auditioned the VPI Scout with a Shelter cartridge, but in a completely different system.
As always, comparing different turntables is an imperfect science, and I don't pretend to have a perfect idea of all the details of how the different tables sound, but I have heard Oracles and VPI's in enough different setups to recognize the inherent differences in their sonic characters. What is clear to me is that someone who likes an Oracle table, might or might not like a VPI - they're very different.