To me, especially in tournaments, Live Poker outdoes online poker by a mile. Here's why.

People are smarter, for one. There's nothing more I hate than when I go all in with AK and some ass calls with 6To and flops a straight. Stealing the blinds is nearly impossible online, since you need to make an oversized bet to do so. People are more careful with their chips live, and sometimes a bet of 3-4 times the big blind will drive out the competition. Not online, you need a bet of up to 10X BB to chase the other hands away. And when they have a hand, you're toast.

Position is also a much bigger factor live, since most players factor position into their bets, raises, calls, and folds. There are a lot less limpers live than online, which means there are usually only 2-3 players to the flop with a table of more than eight.

What else did I miss?