There is no way you can come out of this fight looking good. Teflon is 1.66m and you are 1.8m. You are in your 20s and he is in his 40s. People think you are bullying a courageous midget. Even after you beat him up, he will incessantly praise you and gloss over the incident. After a few days, you will have a sinking feeling that you came out second best. To make matters worse, everyone in this forum will know about your girlfriend, your job, your favourite food to the size of your underwear.
In all the years he has been here, he has been in the thick of every action. F4, 3 stooges, 2 GEs, 1 PE and he has been at the fore front of it all and he is still friends with everyone of them. You will become his "personal friend".
Remember this is the man who chatted with old man, members of cabinet etc.