I play a load of live games around my local area and tight aggressive is the best form of play.
but it's definitely all about how loose/tight passive/aggressive, how often they bluff, how often they use position to an advantage etc etc.
So it's all about the player.
A lot of players have no idea about pot odds and how much to bet.
So if your a successful online player, use what you know to your advantage and don't think just because someone is a winning live game player that you should try and copy them.
A lot of live players suck really bad.
Like cannell said you are going to see a lot less hands in live play and will be playing against a lot of drunks.
Be patience and keep your cool and you'll be able to pick them off.