What this discussion comes down to, is that it's not a black or white "Yes, men can be as seductive as women" or "No, they can't".
It depends massively on who the man is, as well as who the woman is and what she finds attractive. If a girl fits the stereotypical (and often, true) bad-boy loving persona, then a guy in a wife-beater with large biceps and abs would most definitely be more apt to seduce that girl. I've seen it in action.
In another sense, there's my girlfriend and I. We're both more introverted people, we like art, we like articulate language, and we're romantics. We can seduce each other on a pretty even level with well-crafted charm and intellect, rather than low-cut blouses or washboard abs.
And the setting plays a large roll as well. The formerly mentioned would be more successful in a club, or at a party, or at some other social event. The latter is more suited for a less "person-oriented" situation, i.e. not a social gathering. Whether it be just the two together, or in a small group, or somewhere where no one else is paying much attention to anyone else.
Again, it's entirely dependant upon the individuals, and the setting in which said seduction is taking place.
TL;DR, Yes, but only under certain circumstances.
And, also:
Outright Villainy said:
Of course they can. Just learn from this man:
This.