Albert's theory that mass increases with velocity and that as velocity approches the speed of light, mass approaches infinity. Your argument seems to suggest that the thoery that mass does not increase with velocity should be accepted based on the PoP. I would disagree with this argument.
It also depends on evidence. If the evidence we have supports theory A better than it does theory B then we should accept A even if it is less parsimonious than B. If all the evidence supports both theories equally then the most parsimonious theory should be accepted.
I was arguing that non-physical things exist and that putting god into a theory about these things would be simpler than if god didn't exist.
What evidence do you have that supports putting god/s into theories? If the evidence for these god/s-theories is the same as that for the current ones, then the simplest way to go is with the current theories. If you don't understand why an all powerful being (or collection of them) setting up and managing everything is extremely complex then I cant help you.
Jsut as aside this God you're talking about that be the one true god, King of King and Lord of Lords Odin, right?
*not an actual doctor