Harrington, in his two books on cash, which have been out for some years, clearly states that online games have the hardness of live ones of 10x the stakes.
By the way, I 'm a total noob to online and have only played a handful of tourneys in online "homes" for very low buy-ins.
It was interesting to read however that P*stars do NOT completely ban tracking software, which is unfair even if no money at all were involved. Or, tracking software should be automatically offered to each and every person making an account and downlowading their software.