95% Confidence Level

This 95% confidence level is extremely wide. Will be using 16bb/100 for s.d. For many TA players in full games the s.d. is lower. In 6-max games it should be higher. For 100 hands the 95% confidence range is + 32bb/100. For the break even 2/4 player 5% of the time he will win or lose more than $128. This makes it difficult for players to estimate their own ability. It also makes it easy to attribute poor play to bad luck.

Let's carry this further. Increase it to 10,000 hands. The 95% confidence range becomes + 3.2bb/100 Again increase the total hands to 100,000 hands. The 95% CR becomes + 1bb/100. A player with an expected winrate of 1bb/100 has a one in 44 chance of losing over 100K hands. That's huge. In the biggest games 200/400 and higher it's possible no one plays 1 bb/100 better than the field.

This is for fixed limit. The s.d for no limit ought to be higher.
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Chipp, if you're reading this, see if you can post a comment.
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2 bb/100 Standard

Authors speak of this 2 bb/100 standard for low fixed limit games as if anyone can attain it. It's more likely that only about 1% of the players can reach that level.
Think about it. At 2 bb/100 it normally requires 20K hands or less to win sufficient bankroll for the next level. Many players are capable of playing 250K hands a year. That's a lot of players making 50-100K per year. That assumes they are playing 5/10 or lower. A 30/60 player should be making over $200K. Well, I don't believe very many players are that good.