Read a little bit more into aviation and you will see why that is a VERY bad statement to make to try and prove something. The F-15 has been doing that without FBW since 1970. The JF-17 has a computerized Stability augmentation system for its roll and yaw axis that coordinates with the FBW in pitch. Hence the pilot can roll it upside down.. and the aircraft will not roll here and there without external interference.
The J-10 uses a different FBW system. Different design. To satisfy your persistance, I suggest you read up on the interview of JF-17 project here.
https://dl.dropboxusercontent.com/u/81032936/JFT_Article.pdf
Where Mr Zhu Zheng says clearly that it is FBW in Pitch and mechanical in roll and yaw.
There are similar Indian members who do the same in the JF-17 thread. We have Indian members taking off their glasses of patriotism and jingoism in the JF-17 thread too. So they are appreciated there as well.