[VBCurtis]

Beating no fold'em games is important, because the play required to beat them is so simple. Until someone is totally comfortable with the decisions at 2/4 or 3/6, the marginal situations that produce profits at 10/20 are much more difficult to handle.
2/4 is the land of very high variance, but the poker is quite simple and profitable. Fully understanding how to adjust and crush them leads to better adjustments at 6/12 & up when those games get really loose-- instead of "oh boy, now it's Bingo, the idiots are here", you can do little dances in your head imagining you're back at 2/4.
Most who claim 6/12 is easier to beat than 2/4 have exactly one style of play, think that style works better at 6/12, and have little idea how to adjust to opponents who suck. They also tend to say things like "you can't ever bluff at 2/4-- that's not poker." Getting reliably called by bottom pair is MUCH better than stealing an occasional pot, I believe.
-curtis