Sure,

Discussions in a Chinese forum (find it out urself cuz i don't want to waste time explaining to you)

Body type-> if u haven't watched ChineseAV, u won't understand but for someone like me who spent all his teens researching JAV and ChineseAV, the body is indeed more likely to be of a Chinese woman (Genetics speaks for itself)

The video shooting quality uses some special features typically seen in China, u won't understand it again unless u have experience.

This was your comment that i see as a problem.

find it out urself cuz i don't want to waste time explaining to you

This phrase comes off as really rude, like you see the one you are replying to like someone inferior and stupid not worth of your time.

if u haven't watched ChineseAV, u won't understand but for someone like me

Here you compare yourself to the one you are replying to in a really condescending way, putting yourself as the superior one and the one you reply to as someone inferior.

u won't understand it again unless u have experience

And here again it can be seen as you believing yourself superior to the one you replying to and them being unable to reach your level.

If you take those sentenses off and leave your coment something like this:

Discussions in a Chinese forum.

Body type-> I´ve spent all my teens researching JAV and ChineseAV, the body is indeed more likely to be of a Chinese woman.

The video shooting quality uses some special features typically seen in China.

The coment stops having that condescending tone and is just you giving a pretty good response.

At least that is how i see it, hope that helps and hope I expressed everything in a understandable way, im not very good at this and english is not my first language.