My comments came from personally studying the cartridge energy tables provided by several current manufacturers of self defense ammunition.
Energy tables are all well and good if you enjoy light reading. I stop short of calling it fiction even though a large portion of it is.
Having spent many years in the ammunition business I have studyed factory tables closely. I admit I still read them just as I have for almost 40 years. Only now I know HOW to read them.
Why would any ammunition manufacturer would skew the statistics in their favor? What possible motive could they have?
Ft/lbs on a chart can be interesting reading but in the real world it's almost meaningless. Energy tables are based TOTALLY on bullet weight AND velocity.
They don't take into consideration several VERY important factors such as oh, um, lemme see...
Bullet Diameter
Bullet Shape
Bullet Construction
If wounding capability was based on energy tables (or electrical box covers) we'd all be carrying Glaser Safety Slugs or RBCD.
Based solely on energy tables a 160gr hollow point at 1000fps hits just as hard as a 160gr solid at 1000fps. And it doesn't matter if it's solid lead, solid copper or solidified feline excrement.
There have been several "tables" and "formulas" devised throughout the years that attempt to quantify the ineffable.
The old Taylor Knock-out Formula and the Fuller Power factor are just two that come to mind.
The Taylor K-O is by far the oldest that I know of. It isn't perfect since it was created to compare the solid bullets used in the first half of the 20th Century on dangerous big game. But at least it takes into consideration the diameter of the bullet.
Speaking of TOES...
Here's A Simple Test
From a height of five feet;
Drop a two pound total weight water balloon directly on your big toe.
Drop a two pound total weight glass mason jar full of water directly on your big toe.
Get back with me later on the pain ratio.
Yes the often biased, sometimes skewed energy tables published by the ammo makers make for interesting reading.
But then Michael Moore makes "interesting" movies too.
Feel free to believe either.