I personally thought the Resident Evil movie was very analogous to the Final Fantasy movie. Both were good enough to stand on their own, but were not as good as the games they were based on.
On the Resident Evil movie, its just not the same as the games. The zombies look so...well...alive. I don't look at them and think "those things are corpses that are still moving!", I think "those are actors in some make-up hissing at the other actors". The atmosphere of hopelessness and edge-of-your-seat terror just isn't there either. Worst of all, there is no Tyrant at all. I'm sorry, but they should have just changed a few things and changed the title to something else, just like for the Final Fantasy movie.
That article is interesting, though the last question's answer is very ironic. The second movie will be Resident Evil 2: Nemesis huh? That's going to make a lot of peoples' brows furrow as they say to themselves "But I was so sure Resident Evil 3 was Nemesis". Not starting out on the right foot in my opinion.
A bit closer to topic, I think movies based on games suck (which almost all do) because the directors and whoever else writes the script ultimately try to please everyone and end up pleasing no one. How? They try to keep it part of the game while pulling away from it as well.
Obviously, a direct remake of the game won't work in most cases. People have already played the games, and they don't just want to see the same scenes and the same lines redone by actors (especially when newer and newer games have so many CG cut-scenes). At the same time, they can't just make the game entirely new, or it might as well not be based on the game at all. This is exacerbated by the fact that not everyone out there has played the game but the movie-makers want as many people to come see the movie, so it has to be different enough from the game to draw in people who otherwise wouldn't be interested, which includes retelling of backstory that people who have played the games don't care for, since they tend to already know it backwards and forwards.
While that ultimately sounds like an ideal recipe for a hit film, it's one of those things that just can't seem to make the jump from theoretical to practical (with a few exceptions, such as the Mortal Kombat movie). Instead, the fans of the game see it as not being close enough to game, and lacking the elements that made them enjoy the game itself. For them, while the movie may indeed stand on its own, they entered the theater with different expectations in mind, and all they see is that those expectations are unfulfilled. The minority of people who haven't already played the game/aren't fans of the game feel little better, since the director at some point realized that it was impossible to give full backstory for the characters and tell a new, complete story, and on some level the movie then does rely on the games for additional support, leaving the audience members that don't have that ultimately unsatisfied.
That's my take on it anyway.