I would argue that it is significantly harder. In heads up, you can call a bet and see the flop and go from there. In a full table, calling early means you may

I would argue that it is significantly harder. In heads up, you can call a bet and see the flop and go from there. In a full table, calling early means you may have to fold to a raise. There is also a much more complicated analysis of the possibility that you are beat. Lots of times I may be in a hand and think I have the original raiser beat but when two other people call before me, the odds are much less that I have all of them beat. I still think the hardest part of poker is the grind. The computer doesn't get bored or tired and play hands it doesn't have a reason too just because they are stuck in a dead streak. Taking a mostly conservative style, you'd expect the computer to out perform over time. It would be curious to know what percentage of the time the players bluffed the AI successfully and vice versa.