From an Bayesian/Occam's Razor standpoint, Penrose's data could fit the data "even better", but as it's (arguably) a more complicated model, still have a lower

From an Bayesian/Occam's Razor standpoint, Penrose's data could fit the data "even better", but as it's (arguably) a more complicated model, still have a lower posterior probability. Would a universe with infinite time extent be easier to believe than one with a definite start point? I have enough trouble merely comprehending the possibilities, much less assigning prior probabilities to them.