It's a movie folks. I like you choice of words, no human would have".

but the Bible says he survived it
The Bible also noted talking snakes, virgin births and men living in fish, so hardly a believable source! lol
None are more hopelessly enslaved than those who falsely believe they are free - Goethe

thanks for your personal opinion. but the Bible says he survived it, then went to the cross.
Im going to believe the Bible, rather than you.

That's just one more example of Gibson's overkill re: unnecessary gore.
Granted, Roman flagellation was called "the Halfway Death" because of its severity, and it surely contributed to Jesus' "too early" death on the cross. But as you say, the increased level of torture that came from Gibson's dark fantasies, would likely have killed Jesus on the spot.