Question is, who exactly is everybody that you refer to Parker? They may not even be tennis players and bogus reviews. Strings from China sent direct are most likely fake and if you desire quality strings then, as said, buy from a reputable dealer like TW.Fake products on the internet can be had with just about any product.I'm sure that the manuf.knows of the fakes, and will not even want to bother with any samples you want to send to them, as they have more important things to do than to deal with fake strings being sent their way.
Problem with fake strings is it should effect your game,as you will always be thinking about it, and it is no good for your customers as that reflects back on you. If it is fake, its a worthless reel, and $ wasted.
Old saying still is valid.You get what you pay for.