"What differs most is the teaching style. CS has far better lecture notes. Of course, the stats people wrote a very good book; but better lecture notes win because I can access them later and send them to people for free."

So very true. When I was a freshman in high school, we had mandatory "study hall" periods where we just had to sit in a room and be quiet. I spent most of them doing crosswords and sleeping, but I also spent a lot of time looking at printouts of these notes:

http://rutherglen.ics.mq.edu.au/wchen/lnentfolder/lnent.html

It's really important to realize that not everyone who is interested in a field has access to a library full of relevant publications.