I am not really a big fan of how the statistics and especially the graphs are setup with cloudmin. The graphs are not user friendly at all and do not provide that great of information at a quick glance. I would much more prefer the stat layout and information that munin provides. Your system probably already gathers the correct information, it just needs to do a better job at conveying it to the end user.
I agree, the stats are a bit useless. We use Cacti on our other, non CloudMin servers and it is much better than the built-in stats