cl_cmdrate is the number of times per second the client informs the server of its actions.
cl_updaterate is the number of times per second the server tells the client what's been going on in the map.
It is obviously best to get as many updates from the server as possible because this gives you a more accurate picture of where everyone one is and where their bullets are going.
(Note: this stuff fluctuates with different computers etc etc but i found out the majority of them use 100/101.. while some use 30/30...)
but it also has to do with server tick rates and stuff like that.... hence his haha'ing i believe if i'm not mistaken
http://www.enemydown.co.uk/article.php?id=59] is my reference i've had on favs for a good bit
Copy+Paste Win?