I haven't watched either scene (having a sudden problem playing flv files for some reason) but I know that a lot of oral creampie scenes are faked, to appear that the girl coughs/spits/drools out a massive load. Fake techniques may include a quick edit just before the cumshot (with the girl silent and her mouth closed/sealed because she's hiding the liquid she's holding), or the guy's dick is semi-limp, or the load is too thin (like milk, splatters too much), or too consistently white.
It's not just the fake "Freaks of Cock" or "Cumshot Surprise" stuff either, it's sometimes done in standard scenes as well. That being said, there are plenty of authentic scenes too. I wish there were more, I'm a big fan of them.
For a laugh, have a look at this most obvious fake mouthful scene, maybe the most ridiculous I've ever seen:
(go to 3:30)
http://www.pokeherstars.com/pp/JCjcamia1.htm (go to 3:30)