The premise here is that given and infinite amount of time and space, every possible outcome must occur. I suppose there is an element of determinism here, but when it comes down to you personally, at least under this theory your fate is not determined by what your clones do or do not do. If you choose A then presumably there are other clones who have chosen both A and B, as would be the same as if you had chosen B.

Also keep in mind that your clones really have nothing to do with you. The fact that you decided not to eat a sandwich and your clone did would have the same meaning as if you decided not to eat a sandwich and your twin brother (if you had one) did.