Yes, well, if you're only checking email, creating Word documents, and reading online news I suspect you would not notice any differences...
Actually, depending on how much content/advertising there is on a web page, I found that scrolling around the page on my 2010 MBA was not a great experience. A lot of jumping around and stuttering. On the 2014, every web page scrolls silky smooth.
Granted, that doesn't make the content different or better, but there is a difference.