[plexiq]

[ QUOTE ]
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.

[/ QUOTE ]

53 has the same straight potential as 43, and the same chance to flop an OESD.

Straights, using both hole cards:
53: 467,462,42A
43: A25,256,567

Straights, using one hole card:
53: 6789
43: 5678

OESD's:
53: 42,46
43: 25,56

If anything, i think 43 is slightly worse considering straights.

With 5/3, when getting a straight (w/ both hole cards) on an otherwise uncoordinated board, you usually have the nuts. Only exception is the 467-straight. But here, opponent would have to play 5/8 - which is rarely played, and less likely because we are holding one 5.

With 4/3, the 567-straight is likely to run into 89 from time to time.