I tend to agree. When we think of nails in modern times, we tend to picture the way nails are made for putting wood together, now. The heads of the nails are usually designed specifically for whatever task they’re used in. Finish nails used for trim work or furniture have almost no head at all, so they blend in and can be covered easily with wood filler after they’re set deep. Nails used for putting together rough lumber are much bigger and have broader heads to hold things together more rigidly, and add strength. Roofing nails have much wider heads to be able to hold the asphalt shingles in place, without tearing through them. Sometimes, roofers also use a type of washer to further ensure that the shingles don’t tear in areas where there’s a possibility of strong winds.
I have to believe that the Romans must have also had the forethought to fashion specific nails for crucifixion with much broader heads, to compensate for the possibility of the hands of their victims tearing out and slipping off of them. They were very proficient at whatever they did. I doubt they would not have taken that possibility into consideration when planning their crucifixions.
I wonder if any of those “scientific” testers ever considered those possibilities when they did their experiments or calculations. I doubt it.
JMHO