[roryokane]

Actually, from looking at the generated image, I was only able to tell that the font looked vaguely "wrong". I found out it was specifically Aktiv Grotesk only by going through many steps on Identifont: http://www.identifont.com/identify?22+%20+9J+39+1R6+26RB+4PW....

But still, I agree that most people would probably not notice the font being off at all. And the font smoothing difference jumps out at me the most; if the use of Aktiv Grotesk was the only difference from real Safari, I might not have noticed anything.