I wonder what world Pascal was living in. For his theory to work, there can only be one existing religion or atheism. Yet there are thousands of them.
I think we have several possible solutions to the GOD problem
1.) Monotheism
2.) Polytheism
3.) Spirits
4.) Atheism
And of course even then, you are left with the question of which rule set to follow and which beliefs you must hold. If Allah is the true God, he won't take your Buddhism, and if it's the Norse pantheon, then Odin may not like Christians.