Which phone is better the Huawei P30 (without Pro) or Huawei Mate 20 Pro? I'm ea for the performance?
In terms of technical features, both devices are almost identical, the difference is more in detail here. Built-in sensors, camera, display, battery and case (weight, etc.).
Performance is pretty much the same for both. When it comes to gaming performance, there's no way around the Xiaomi Mi 9 that has much more than the Huawei devices.
Both have the same processor. However, the Mate is a few points faster, and currently also the best smartphone on the market.
The P30 Pro did not manage to replace the Mate 20 Pro.