That doesn't go under any of the report options, and definitely doesn't go under "harassment."
It was a mild form of harassment sure, but still a form of harassment. To report a comment, you don't have to say anything. The only reason to state that you reported someone is to try and publicly call them out.
You are in the wrong here. I suggest you delete comments that are actually offensive and verbally harassing, such as people attacking others verbally on here instead of wrongly removing a comment just because "it added nothing."
I deleted the comment you reported as well. If you see something that is offensive or verbally harassing that is being left up, please make sure you report it so we can see it. While moderators do our best to handle things quickly and efficiently, we are only human and can't see everything that is ever posted on the boards. If you report it though, even if it takes a little while sometimes, we will see it. However, just because someone else also broke the rules isn't free reign for you to as well. Every poster is judged as an individual, and is responsible for their posts and their posts alone.
FYI: My comment was fine for the conversation we were having. You had no right to do that.
Technically, I did have that right. I am a moderator after all.