Not everyone agrees with that. Some people have small hands and prefer using a smaller controller. I for one don't like the bulkyness of the 360 controller. People with bigger hands tend to like 360 controller better. I for one have a difficult time adjusting to new controller design since I went from NES to SNES to PS which are all very similar in a way so I have gotten used to the design and I prefer it over all others. Another great controller is the Wii Classic controller pro, which I also like better than 360's controller.
Xbox has the best controllers... The only person with hands too small to use the 360's controller is http://www.youtube.com/watch?v=xu_bE7g2wqM
Are you that guy?