How can Wilson Audio speakers sound that good if they are using OEM drivers?

I'm no Wilson fan but in my opinion the exotic materials used by some companies are about talk rather than performance.  I had B&W for a long time and when I moved on I was kind of angry that the aluminum drivers of my new speakers sounded so unmistakably better than the fun to talk about but not very good sounding Kevlar. 

Exotic and new obviously doesn't equate to better sound. Vintage speakers from Altec and JBL etc. are proof of that. Besides, a loudspeaker is a system whose performance depends on a balance of driver, crossover and enclosure design considerations. You must already know that.

Then again, some ask why tubes manufactured in the 1940s can sound better than Russian or Chinese tubes made in modern factories in 2018.

Listening to a set of speakers made of cheap particle board, silk dome tweeters and paper woofers. They sound amazing! No need for those fancy materials 😉

I think you make a mistake by saying Wilsons use OEM drivers. Sure, they are sourced by OEM companies, but they are also built to very detailed manufacture's specifications.  It's like saying "how can Honda's Formula 1 race cars be all that great when they have the same basic engine as a Honda Accord?"  And many Indy cars are just Fords and GMs, right?   Um...... yes and no..