I'm not a multi-player kind of guy. To me there is no fun at all in having a dozen or more loud mouth kids shooting you over and over and over and over. I don't feel like there is any point in multi-player other than to run in circles and try to kill the loud mouth kids before they kill you. So, as with any game, I can't really comment on this game's multiplayer. Did I mention I don't like multiplayer?
But, in my opinion, the campaign is just as good as any Call of Duty game. And I love ALL of the Call of Duty games. Graphically, I'd say MOH even surpasses COD. It's not really any different than any other shooter out there. You have a goal to reach, you shoot people on your way to that goal, you hit a checkpoint and you do it again. But, I happen to like that formula and MOH does it just as well as the top performers in the genre.
I have no idea where anyone can say that this game has bad graphics. There are times, especially in the day time landscapes, that it actually looks like you're watching an action movie. Don't be turned away from this game by a few bad reviews. It's pretty darn good.