Slower webpage scrolling speed?

Hi, all

So I was using my friend's macbook pro the other day to browse webpages. To my surprise, I found that two-finger scrolling on his Chrome felt much smoother compared to my air. So this means that CPU speeds do mean something?

FYI, his macbook pro is a 13-inch 2011-i7 without SSD. Mine is a 13-inch 1.86/ 4g/128g