I agree with this. Just an insane running talent. It's hard to compare RBs with different styles. For example, Jim Brown was the perfect combination of speed, power and balance. Derrick Henry just runs over and past people. But no one comes close, imo, to the pure running ability of Barry Sanders. He had top level speed and balance, but, he had extraterrestrial agility that puts him above the rest. Guys would trap him in the backfield and he would juke left, right, spin and take off for 50 yards.
I would always get him injured in Tecmo Super Bowl season mode, because I would run him every play just to see how many yards I could accumulate.