Nokia 6630 vs Nokia 6680

I came across this article a few days ago:-

http://www.symbian-freak.com/news/0305/6680.htm

Which clearly shows that the Nokia 6630 is a much faster phone than the Nokia 6680.

Then I came across these:-

http://www.jbenchmark.com/phonedetails.jsp?D=Nokia+6680
http://www.jbenchmark.com/phonedetails.jsp?D=Nokia+6630

Again showing that the Nokia 6630 is a faster phone. What i fail to understand is why would anyone buy the Nokia 6680 which is much expensive than the Nokia 6630 and is slower than the 6630 and the keypad is not ergonomically designed, with just some minor improvements?!