Well whatever, assuming in character, Saitama usually sandbags, and he's not going to instantly obliterate a priest, as such, Pucci is going to get the first hit in as Saitama can't see Stands so to him, it's just some dude.
If he has Whitesnake, he wins 10/10 times unless Saitama is bloodlusted, he just does one one of his many hax abilities to incap or kill, such as removing his DISC's which kills (Even Jotaro had to be frozen so his body didn't decay till he got his DISC's back).
C-Moon depends on if the turn out ability would work and only if he hits a lethal place, hard to say, 50/50 if it works or if hits the right place..even if it works, if he hits a non lethal place, Saitama will retaliate it and ohko.
Made In Heaven, Pucci wins, but only if Saitama sits on his ass for five minutes. While Saitama tends to sandbag, he's not a idiot and is gonna notice the acceleration of time by billions of years, and ohko Pucci before he can accelerate enough to abuse KE to ko him, which obviously is going to need a TREMENDOUS time crunch to hit 4-A. He will never hit that in this match.
Pucci ironically, loses more often the stronger he gets. Whitesnake wins every time, C-Moon is vague and is probably inconclusive, MIH he loses.