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BrowserAudit has less warnings for my Firefox setup vs. out of the box Tor Browser
(browseraudit.com)
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The thing you should be aware of is that Tor is designed to make you look uniform to every other Tor browser. It's set such that you should not really stand out from other Tor users by browser fingerprinting techniques.
Without showing us what the differing warnings are, it's hard to even assess what this information means.