In https://github.com/foolip/mdn-bcd-collector, we collect results from various browsers, and map those to browser releases in BCD, since BCD doesn't have every single release but just the more noteworthy ones.

Given the current logic I have, Safari 6.2 on OS X would map to 6.1. However, the UA string of the version on BrowserStack is this:

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/600.8.9 (KHTML, like Gecko) Version/6.2.8 Safari/537.85.17

That "537.85.17" is larger than the "537.71" claims is the WebKit version for Safari 7. I don't know what "600.8.9" means, though.

This risks leading to spurious updates changing "7" to "6.1" based on results from Safari 6.2.8.

cc @gsnedders