I'm not aware of the notion that Chinese brands entering the EU market are known to retain their (relatively) competitive pricing. IIRC most offerings should be more expensive.
In our review, the Oppo Find X6 Pro shows off its best side. Its appealing design and strong hardware make it a great alternative to the Galaxy S23 Ultra or Xiaomi 13 Ultra. Unfortunately, it is very unlikely that we'll have the pleasure of being able to buy Oppo's smartphone in Europe.