Also, limit is a game of small increments, a few loose calls, or improper folds can crush your results, in NL, as long as you only make small mistakes, you can recover.

Also, you can go through several SnGs where you don't get any really hard decision hands.

But I disagree that NL can be beaten by a system but limit can't. If anything, you can more easily make money with robot poker in loose limit games. I would really be surpirsed if a bot couldn't beat party .5/1.00 games.

Just need a list of starting hands by position, players in the pot, and the bets to call, it is all odds after the flop. It is pretty rare to have a really costly tough decsision in low limit games.

Sklansky thinks limit is harder because that is what he plays, I would trust the opinion of someone like Daniel Negreanu or Berry Greenstein more. Also, the games Sklanksy used to play were very tough, 2-3 to a flop games where strategy and reads were much more important (at least from what I have read from his posts).