As someone who isn't a UFC fan but occasionally catches the PPVs I thought Machida should have won that fight, although I can see how the judges could have given it to Jackson. The first round could have gone either way and Jackson seemed to win the second, the thrid was easily Machida's but I can see Jackson winning the other two.
I don't think the 10 point scoring system works at all for MMA, especially in a fight like that when both fighters stay on their feet and spend a good part of each round each round posturing and feigning for position and there's only three or four meaningful exchanges in each round, it just comes down to a crapshoot for the judges and the fans. I don't know enough about MMA to suggest a better alternative, but from what I have seen there's definitely something wrong with the scoring system. A fight and a result like the Machida Jackson fight is almost enough to put off someone like me who isn't a commited fan but is somewhat interested in the sport and occasionally watches events. When your main event is verging on boring and comes down to controversial/bad judging it's not a great way to gain new fans.