Oh yes, slightly different, but not so that you can't hear they aren't related. But as I noted before, it isn't really that bad as you get a more personal relationship with them.

Most FPS games are rather linear, some just disguise that well and some don't. Here we have a case of the latter. Though there are times when you certainly can take the wrong turn (bridge of the Seperatist ship and in the Assault Ship), but you are quickly lead back and you should easily findyour way by the help of your buddies. If ever in doubt, follow the others.