Chattaway also says the film exaggerates the violence done to Jesus in much the same way that other movies involving Gibson have brought down sadistic gratuitous suffering on their heroes.
While I haven't seen the movie yet, I would be hesitant to agree with that statement.
1. The scourging was not limited to "Forty save one," as Jesus was not a Roman citizen.
2. The end of Isaiah 52 says that He was "marred more than any man, and His form more than the sons of men."
3. Ever notice why Pilate scourged Jesus? To content the people. I think if you look at the crucifixion passages, you'll see that Pilate honestly didn't want to put Jesus to death. Even his wife didn't. Therefore, in all likelihood, the episode of scourging was devastatingly brutal. I think Pilate wanted to create sympathy in the heart of Christ's accusers in the hope of avoiding the cross.
4. If you read the works of Josephus and other historical figures, they shed some light on the events leading up to the cross. Being struck on the head with a reed is one such thing. This was a long, wooden staff that was beaten into the head of the victim. The soldiers did this in an effort to top each other in brutality. Christ was unique, though, as this was done in addition to a crown of thorns.
5. A passage in Isaiah states that they "ripped the beard from His face."
6. In all of this, keep something in mind. From at least some time preceeding the Garden of Gethsemane through the crucifixion, Christ didn't sleep.
7. We can never totally convey the violence endured by His soul, nor can we comprehend it. Think about this: Revelation 20:14 tells of "the second death," which is the death of the soul. Jesus actually tasted of that. Before His episode in Gethsemane, He told the disciples that "My soul is exceeding sorrowful, even unto death." Why? Because He was simply thinking about the events of the cross (particularly, the three hours of darkness). If just thinking about it caused such suffering, who can tell how awful it was to actually experience it?
I could go on, but you get the point. I feel there is no way we can capture in its fullness the magnitude of the sufferings of Christ.