Absolutely wrong.
Obviously the rifle round has a much higher velocity. It literally explodes organs along the wound path.
What a bullet does to a human body
"There is a tremendous difference in the amount of energy associated with a bullet from an AR-15 rifle and that of a handgun, he said. Nikolas Cruz, the shooting suspect who opened fire on Marjory Stoneman Douglas High School in Parkland, Florida, killing 17 people, used an AR-15 semi-automatic rifle, according to local police.
If a bullet from a handgun strikes a liver, it injures the organ by poking a hole and causing tissue disruption around the path of the bullet. More specifically, a 9-millimeter handgun creates a hole that disrupts three quarters of an inch around the bullet's path, Smock said.
"But with a rifle round, you have massive tissue disruption," Smock said. "Rather than three quarters of an inch around the wound path, it is disrupted three to four inches around that same tissue."