Which is better, Xiaomi 9 or mate20? Which is cost-effective?

If I choose between Xiaomi 9 and mate20, I prefer to say mate20, but both have their own advantages and disadvantages. If we only consider the price/performance ratio, the price/performance ratio of Xiaomi 9 will be higher. ?

1, mate20 equipped with Kirin 980 and Xiaomi 9 equipped with Snapdragon 855 have better processor performance than Kirin 980, but this difference is hardly felt in daily use. ?

2. In terms of taking photos, Huawei mate20 can definitely open a lot of Xiaomi 9. Mate20 adopts multi-focus three shots, supports Leica super wide angle, 2.5cm macro and AI super night scene, and easily becomes a photographer's dream. Xiaomi 9 adopts Sony IMX586 sensor, which supports contrast, phase and laser hybrid focusing. The experience is good, but there is still a big gap with mate20. ?

3, Xiaomi 9 built-in 3300mAh battery, and Huawei Mate20 built-in battery is 4000mAh, both support fast charging, but Huawei Mate20 has better endurance. ?

4. From the price point of view, Xiaomi 9 will be cheaper than mate20, but because mate20 was released earlier, after several price adjustments, the price gap between the two is now very small.