He's talking about bicycles. The quality of China's carbon bicycles is so high that he couldn't tell the difference between the $4,000 brand name bikes made in China and those $400 carbon frames sold on ebay that are copies of the brand names.
Well, that's mostly because many of those are out of the same factory. Pinarello orders 5,000 frames and the factory makes 5,500 frames. 5,000 go to Italy for painting and branding, and the other 500 are sold to people on ebay for a fraction of the cost. Overhead is huge in the pro bike industry. Chinese manufacturers know that it only takes a few bad frames that fail, causing life-threatening injuries, before people are too scared to buy direct so those bikes are often made with additional internal carbon bracing compared to the ones that go for branding.
Those "knock off" frames are often 50-100 grams or so heavier (On a ~1kg frame) but can withstand higher impact than the original and are stiffer, allowing for enhanced power transfer. In a test where a real Pinarello-branded frame and a Chinarello (slang for fake Pinarello) frame were both dropped from x meters height with 70kg weight on top, the Pinarello scored an 80 and the Chinarello scored an 86!
There are other stories of riders who purchased a $10,000 Pinarello but babied it, reserving it for racing. They then bought a $400 Chinarello frame and built it up (maybe $2-$3k depending on components and whether they were MSRP or craigslist deals) for daily training only to find in the end that the Chinarello performed better and became the choice for racing as well. The Pinarello became a snobby wall ornament!
And that was many years before. Now, they have learned and they have independently-developed frames with even more competitive weights (frames in the 7XX gram range) but the price has also creeped up (from about $300 to $550) for the best latest models. Nonetheless, last year's models can still be had for cheap ($3XX).