I've said before (The W) that I don't think online gaming is all that important to the current crop of console's sales. Here (gamesarefun.com) is an editorial that agrees with me. I'll concede that some of the points sound like whiny complaining (its too hard/expensive to set up a home network), but they are all legitimate reasons why its only the hardcore gamers pining over any lack of online content, and not the gaming masses.
I bought this the other day and have enjoyed SR:3. I wouldn't have bought it otherwise so I guess its a win for THQ if I buy anything in this series, but the problem is I'm most likely going to pick up something used and not new if I do.