Difference between Come down on someone like a ton of bricks and Hit someone like a ton of bricks

come down on someone like a ton of bricks—(coll.) reprimand or punish a person severely:

• If I find you misbehaving, I’ll come down on you like a ton of bricks.

hit someone like a ton of bricks—(coll.) make a person feel an unpleasant emotion very strongly:

• He said something that sounded innocent to him, but it hit Debbie like a ton of bricks.