My original review focused solely on Starwood properties, and I thought that it may be helpful if I expand the research to include other chains. I've gone through and checked rates at both Hyatt & Hilton group hotels that are affiliated with Virtuoso, again using a 1-night stay on October 31st for the test. Here is what I found:

Hyatt Hotels
In all, I reviewed 27 Hyatt properties. Of those, only one was sold out, so I used November 1 to check its rates.

Of the 27 Hyatt properties:

• 19 of them (~70%) had a Virtuoso rate that was lower than the BAR rate associated with the same room type.
  - Discounts ranged anywhere from 2 - 15%, with an average of 9.2%.
• 6 of them (~22%) returned BAR rates & Virtuoso rates that were identical.
• 2 of them (~7%) returned Virtuoso rates that were higher than the BAR rate.

Hilton Family Hotels
In all, I reviewed 6 Hilton/Waldorf/Conrad properties. Of those, only one was sold out, so I used November 1 to check its rates.

Of the 6 Hilton/Waldorf/Conrad properties:

• 3 of them (50%) had a Virtuoso rate that was lower than the BAR rate associated with the same room type.
  - Discounts ranged anywhere from 10 - 12%, with an average of 10.7%.
• 2 of them (~33%) returned BAR rates & Virtuoso rates that were identical.
• 1 of them (~17%) returned Virtuoso rates that were higher than the BAR rate.

I've converted my spreadsheets with the rate details into .pdf files that can be viewed by clicking below:
Hyatt Spreadsheet
Hilton Spreadsheet