What would be the choice given to Neo's five predecessors when they were in the Architect's room? I don't think that would be one between saving their lovers and saving the whole human species.
They were given the same choice as Neo - help reload the Matrix, or face the destruction of the human race.
Notice that Neo is not being forced. Either the machines cannot force him, or (more likely) the problem is choice, and the One must choose to reload the Matrix willingly. All versions of the One must have been able to walk away. The difference between Neo and his predecessors is his increased humanity - aka. his ability to love.
Love is, as they say, indistinguishable from madness. Thus, Neo is the first version of the one to not comply with the Architect - while the others cared enough about humanity to protect it from extinction, Neo was willing to risk extinction to save Trinity.