Here's my experience with the demo, in a nutshell.
"No, do the thing! No, the OTHER thing! Stop him from doing that thing! How do I do my thing?!? Oh no not that thing!"
Two demo matches played, one lost, one won, and a general sense that UFC 2010 is the superior title, although that's based on having played both demos.
Also, I really, really, REALLY hate games that are primarily gesture controlled, as all that leads to is my clunky, innaccurate thumbs saying "DO THIS" while my character does something else totally un-useful and I lose (see also: all advanced tricks in the skate. series).