[El_Hombre_Grande]

You are missing the point. While 53s most certainly does dominate 43s, the hand ranking ARE NOT heads up hand rankings, they reflect playability in a full ring 10-20 LHE game. Thus neither hand has any highcard showdown value (the only reason domination matters), and 43 more often leads to straights or open ended draws that can be semi-bluffed.

If there is a weakness to the hand rankings, I think that it is that they assume more multiway action than is currently prevalent in common online games, where VPIPs are quite low compared to their live counterparts. In any event, the author points out how to adjust the tables for tighter and more aggressive games, namely by dropping hands that need many opponents and cheap flops. Thus to call it a weakness is a stretch.