Strength, redefined, and a ceiling on the response

Notice what the report below does to the word strong. Not the man who can put another man down. The one who holds himself while the anger is actually running. That is a statement about capacity, and capacity is only needed where there is something real to hold.

And on anger about something genuinely wrong, which is not the same subject, the Qur'an sets a ceiling of proportion on any response, and then says immediately that patience and pardon are better. A ceiling is not the same as a prohibition, and the tradition does distinguish anger for the sake of God from anger for the self. Where that line falls in your situation is a scholar's question.