[goopxx]

Not taking advantage of their position. Which is the smarter move. Raising with Ace-king in the blind or raising with pocket tens one away from the button or on the button. Although the ace-king is a slight favorite, heads up, in the real world the tens will win more money. When the ace-king gets a favorable flop he will win a small pot, but 3/4 of the time he be forced to bluff or check and is really at the mercy of the players following him. The pocket tens on the other hand can bet or bluff depending on the nature of the hand. Even when an over card flops you bet knowing your opposition puts you on a better hand. When the betting makes it is obvious that you are beaten, muck em. Calling that last bet, when you are beaten is futile and expensive. Stay tuned, more tips on the fine art of holdem will be forthcoming..
I play mainly No-Limit tourneys, and even with a full table you'll often get into a position where you're heads up with a showdown pre-flop. In these situations you've got to know the power of a small pair.

If you're getting short stacked and need to double up, a small pair is often the time to take your chances.

If you can get heads up with your small pair then your only fear is a bigger pair, against everything else you're either a small fav or a big fav. You're dream opponent will be a big stack trying to take you out and calling with something like A5s, if you've got 66 in your hand you'll be a 2-1 fav

You're actual point at the start of this thread about AK vs TT and the position of play when your on a full table is a lot more complicated. Is it a tourney or cash game? Is it limit, pot or NL holdem? If it's a tourney then what stage are you at, what's the blinds and what's the stack sizes of the players? Are your opponents tight, aggressive, lose etc?

Even with a lot more info about the hand you'll often still get the answer 'it depends' and that's what makes poker such a great game.