I'm pretty sure the page you linked to relates to developing within the Facebook platform, but if you have concerns, it's probably best to contact Facebook and/or Google. They'll be the only ones who can give you a definitive.
The link reads like this: "These are ad networks or companies that we'd prefer you not do business in Google Adsense in competition to us." Like a, sort-of grey area. In other words, those who signed the contract to do ads on facebook CAN'T do it on GA, and this includes you.
That's just how I read it.
However, the facebook integration thing isn't supposed to cross over to the adnetworks that you currently "serve."