I don't think that Favored Classes neccesarily represent the thing they're most likely to become, but can also be something that comes especially easy to them. Since drow are still elves, they have a natural affinity for the wizard class.
But in fact, I have often thought of changing the favored class of male drow, but not to fighter: Female Drow become clerics because they hold the most power and are therefore the best thing for a female drow to do. Also, Lolth is strong, and encourages it.
But what's the best thing for males to do? Who's the man (or rather god) they turn to for power? Right! Vhaeraun. And he teaches them the skills of the rogue in order to survive in an environment ruled by Lolth's chosen females. So I think that rogue would be a good favored class for male drow (unless they're oppressed by the females, but who wants to play such a thing. and Favored Class is mainly something for players, a DM won't need to worry about XP penalties!)