[pkozlowski_os]

Actually jqLite has 2.36kB when minified / gzipped, check this for more details: https://plus.google.com/104744871076396904202/posts/EgjErc6N...

This is over 13x less as compared to full jQuery (1.9.x): http://mathiasbynens.be/demo/jquery-size

so at the end of the day this might be a substantial difference.