This hit was text book. From the first angle presented, the Defender did not hit with the top of the helmet and did not contact the runner above the shoulder. Is the league saying football is not going to be that tuff. A defensive player cannot connect with an offensive player with or without the ball in a manner with the more than probable cause of series injury or
the tackle cannot be made. https://www.youtube.com/watch?v=i6F3fwRuEUU
As a football player you can tell if you can level a player off the ground.