On: How Reddit ranking algorithms work

[buddydvd]

I wrote a simple jsfiddle page that show you the current stories in /r/all and their associated ratings as calculated by the hot algorithm:

http://jsfiddle.net/6FVd3/embedded/result/ Source: http://jsfiddle.net/6FVd3/

One thing I noticed is that the stories aren't sorted by the algorithmic score in strict descending order. I recall some mentioned that reddit mangles the ups/downs score exposed via their API. Is this the reason?