Have you notice, what is difference between jquery.js and jquery.min.js, here min means (minified version). If you using .min for your live environment then Google are now checking on page loading time. Having all yours JS file minified means they will load faster and will score you more brownie points.
Both support the same function but in jquery.min.js has stripped out white spaces and comments which make this file compressed for production environment. Which help us to load faster and use less bandwidth.