Actually, it depends on the situation. Heads up, 32o (32.30%) fares worse against a random hand than 72o (34.58%). That's mostly because the hand will be won by a high-card or higher pair. You're not going to need a straight to win.
But, when the hand is multi-way, 32o does better because it has straight potential, and the odds
that a pair of 7s or a high-card of 7 will be enough to take the pot down is insignificant. Both hands do much, much worse in these situations (around 10% equity 6-handed), but 72o is the worst of the two.
The other hands you list do suck, and they don't do a whole lot better than 72o (when 6 handed). But, they do a little better. It might be less than a percentage point, but it is still better.