The difference in expected experience is that some people think about the question given a time camera, while others think about the probability that additional evidence will come to their attention.

I think the probability that I'll ever have a time camera is very low, and the chance that I'd use it to understand the details of this roomate and death relationship even lower, so there is no expected experience from this direction.

Additionally, there are lots of ways for someone to have some responsibility for a death without having a hand on the weapon directly.

To me, probability assignments of her guilt or innocence is primarily a matter of group consensus. There WAS an underlying physical reality, but the proposition given wasn't well enough defined for me to understand the wager.