[Chuckles1248]

The reason there is a difference between this hand and the examples in HPFAP is the postflop skill of the opponents. In HPFAP, even in the section on loose games, Sklansky assumes the players play decently postflop, so by disguising your hand preflop, you are able to better outplay them postflop. In games like online 1/2, the people play so atrociously bad postflop that the edge you lose by not raising preflop is much bigger than the edge you gain through deception.

The loose 1/2 games are different from loose 10/20 games because the players on average play better in 10/20, even if they are still playing too many hands.