Relieve pain, prevent injury, and increase performance. Get customized mobility coaching developed by Dr. Kelly Starrett.
They are not the same.
If you are not seeing change from the barbell mod move onto something else.
Different mobs are going to work for different people addressing the same issue.
You need to have someone else do the ball wacking.
You need to address the cause of the restriction. Have you looked up/downstream of the heel cord?
You see the issue at the heel cord, but this may not be where the problem originates.