I can't personally compare the two, since I had to decide between Civ IV and the Movies and picked the Movies (as you can no doubt guess).
It is more griping than War of the Worlds. I found I couldn't watch that while playing the game as I wasn't paying enough attention to the TV (although it's still a good show.).
But, so far, it's got a lot more micromanagement than I thought/like. It doesn't seem to be a casual sort of game. You have to do a lot of juggling and watch things closely.
Basically, you build your studio like any other sort of tycoon game (particularly rollercoaster tycoon). Lay out buildings, pathes, etc. And you have to landscape. And hire janitors to pick up litter. And builders to repair buildings.
Then you have to make the movies themselves. Just in game terms, not so much the editor (after about 3 1/2 hours, I finally unlocked the script editor). This is where the juggling is. You basically have to keep your writers working on one script at a time, while your actors/directors are making another one. (You don't have to, but need to keep the money rolling in to keep from growing broke)
This is hard because you basically have to find your little sim guy, click on him to pick him up, then drag him over where you want to go. In the case of the writers, usually pick them off a park bench and drag him to the writer's hut.
Then once you get a script, you have to assign the cast to it. Which is somewhat simpler, the crew & extras are assigned automatically, you just have to drag the completed script from the writer's hut to the casting area. Then find your little sim actors and director and pick them up and drag them.
It would be much, much easier if you could just assign the guys without having to find 'em, pick 'em up, and drag and drop them. Thankfully, if you click on their picture on the left hand of the screen it takes you to them, but you still have to pick them up and drag them over to the right place. And if you have more than a few, their pictures disappear into sort of an empty rectangle, and you have to remember which is which.
There's also research. I just unlocked the lab. It works like everything else, you hire little guys and drag them over to what you want them to do (in this case, what to research). New clothes, sets, tecnology.
Anyway, beyond that, you need to watch and manage your directors/actors. Not quite like the sims, but they do have various levels that you have to watch out for. if they get stressed, you have to drag them over to something fun for them to unwind. And you are supposed to drag them together so they can socialize, but I haven't had many free moments to do that. I just unlocked the bar, so I haven't had any drunk sim actors yet, but that's supposed to be a problem. The one thing I did have trouble with was their salaries. It didn't seem to explain how to adjust them in the tutorial, and looking in the manual, it actually turns out you have to click on your cash total, then do some more clicking to take you to the salary screen. Seems odd they didn't integrate it with the rest of the interface.
From what I've seen of the movie making bit, it's pretty neat. Basically you pick a set, then you get a list of possible scenes. You can filter them out by what sort you want, romantic, violent, intro, resolution, etc. As near as I can tell, you can string as many together as you want, but the computer scripts are only a handful of scenes.
It runs pretty well. Seems to use very little memory. I'm used to the Sims 2 which takes about 5 minutes of loading to get to a house, and then about 2-3 minutes of unloading after I quit. This takes about 2 minutes to load, and exits immediately.
It's also very slick and polished. Even has sort of a GTA style radio, which doesn't play music, but does give you the news and chatter via a DJ (which is what the manual calls them, though is probably more accurately an announcer or MC).
So while I can't comment on the fun level, it definitely has a major involvement level. So you are probably wise not to try to play both games.