Hello. When comparing the test data, I noticed the following irregularities:

browser.yml, line 1722:
user_agent: Mozilla/5.0 (Linux; U; Android 4.3; en-us; Nexus 4 Build/JOP24G) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/37.0.0.0 Mobile Polarity/6.0.0 Safari/534.30

The version ends with an 0. Some Implementations (e.g. java) will skip trailing zeros in the test-definition (while it will parsed as a double value).
The Device Detector returns the string "534.30", which unfortunately is not equal to the parsed double number 534.3. For a better consistency, it would be advantageous to define the (engine) version with trailing 0 as a string.