I linked the one specified...35s in. Not every tackle (as a lot of them are trips and should have been paid as such).It actually could've been far, far worse than it ended up being. He could've planted his feet and swung him backwards, or stuck his weight into him on the ground during the rollover. He actually went to every effort to make sure he wasn't seriously injured.
Interesting you link a video with Dangerfield getting tripped and nearly smashing his head on the ground in it as an 'acceptable' rundown tackle.
This wasn't the question posed though, how does NIC NAT from the position he was in against a player half the size of him tackle him in any other way?
He has both hands on him, the simple answer would be not launch him forwards.