Currently parsedUserAgent.browser.major is incorrect for Edge - it reports parsedUserAgent.engine.major instead. I.E. Edge 41 incorrectly reports a parsedUserAgent.browser.major of 16 - this is the EdgeHTML version but not the browser version.

I'm currently working around this with something like:

var EDGEHTML_VS_EDGE_VERSIONS = {
	12: 0.1,
	13: 21,
	14: 31,
	15: 39,
	16: 41
}; 

var browserMajorVersion = parsedUserAgent.browser.major;
if ( browserName === 'Edge' ) {
	browserMajorVersion = EDGEHTML_VS_EDGE_VERSIONS[browserMajorVersion]
}

It would be cool if UA Parser JS did something similar. It's a breaking change though so should be in a major new version.