Are you serious? LOL You are right. Tackling is much different. It is much worse.
When you are thrown down you have the force of someone throwing you. When you are tackled you have the force of the person hitting you. Simple physics shows that the tackling is worse.
The kinetic energy of a person’s body plus the force of being thrown has to be less than the force of the person’s body plus the force of the tackler’s body plus the force behind the tackle (probably much higher individually than the force behind throwing someone)