People are so obsessed with numbers! Who cares whether it's 6.5 or 9 percent? From the looks of the pic, his fat content is about as low as it can be without being unhealthy.
Whether you actually have a condition known as gyno or not, the issue is whether you should try to alter your appearance through drugs, surgery or compulsive fat loss. I don't think you should. Attempts to get rid of this perceived defect could end up costing you dearly in other ways.
I don't...
You look great. I don't know why so many people are saying you have gyno. Real gynecomastia is where men actually develop female breast tissue, which can normally only be dealt with through surgery. I don't see any evidence of that on you.
There is also a condition that many people refer to...
Wow!
That's an amazing transformation! How old and how tall are you? How did you do it and what got you motivated? How big were your biceps before and after? How was the tat on your arm affected by the growth? (Don't mean to bombard you with questions -- just curious.)