If I remember from what are now two-decades-plus-old conversations with Jeff Jordan, Pascal offers arguments to the effect that if there is a God, He is most likely to be revealed in the Christian revelation as opposed to others. So the question then is posed to people who must either choose the Christian God or none at all, and who see a substantial amount of merit in both views. If we are in THAT position, then we are given a reason to accept theism as opposed to atheism. Addressing the Wager to someone like Dawkins or Loftus, who considers Christian theism to be not only false but preposterous, and to recommend to them that they ought to submit themselves to brainwashing seems to be a mistake.
Unlike some people, I am going to define brainwashing for the purposes of this discussion. You are submitting to brainwashing if you are knowingly trying to cause yourself to believe something that your best reasoning tells you is very probably false. If you really do think that the Christian God is no more probable than Zeus, or Athena, or the Invisible Pink Unicorn, or the Flying Spaghetti Monster, then the Wager is out of play.
The Wager can take different forms; the traditional Pascalian form uses the concepts of heaven and hell, the Jamesian form views it in terms of what it would take to have a meaningful life, and the Kantian form looks at what would make it easier or harder to live a moral life. I think the argument can be hitched to a Lewisian argument from desire, whereby it is argued (and Pascal is one of those that argues it most forcefully), that humans have built into their nature a desire for infinite and permanent joy, and we must accept the permanent frustration of a significant part of our nature if we decide there is no hope for that.
I think the Wager does one other thing: It undercuts "default" arguments for atheism or agnosticism by pointing out the practical implications of belief and nonbelief. It has always seemed to me that we must either structure our lives with God in mind or without God in mind, so we can't have the kind of neutrality on this issue that we have on, way, the truth of Fermat's last theorem of its denial. Therefore, waiting for a decisive swing in the evidence leaves us without guidance as to how we ought to live our lives now.