Why does the hitCount have to be >= 4 in the last 'else if' statement?

In the attack and defend methods in the AbstractRobot class, I had the hitCount set to equal to 4 in the last 'else if' statements like these:

else if (hitCount == 4) {
           hitCount = 0;
           attackedBodyPart = BodyPart.CHEST;
       }

else if (hitCount == 4) {
            hitCount = 0;
            defendedBodyPart = BodyPart.CHEST;
        }

But I couldn't get the last validation requirement. It was only after I had changed the hitCount to be >= 4 like this:

else if (hitCount >= 4) {
            hitCount = 0;
            attackedBodyPart = BodyPart.CHEST;
        }

that I got the validation. But why does the hitCount parameter have to be >= 4 in the last 'else if'?