Wrestling with God?

Yes, God told Jacob he had "prevailed" in his struggle with God, but obviously, there is no way that Jacob would have prevailed against God if God had not allowed it. Surely, Jacob's physical attributes were nothing against God Almighty, even in human form. I might be willing to admit that Samson might have a chance physically against God, but even that seriously stretches credulity, doesn't it? No mere mortal, however, well-built, however strong, would ever truly prevail against God.