You're grossly exaggerating.
I don't own the phone but based on the comparisons on youtube the Mate 30Pro falls behind in terms of colors and dynamic range by a big margin. Not even close to the iPhone XS Max. Ultrawide camera is also worse than the Samsung's. Video stabilisation of the Mate is pretty good and best in class, and zoom is also best in class by a big margin. Night mode is also (again) best in class on par with the Pixel 3. But the rest is not even close.
4K 60fps -> nope
Front facing 4K -> nop (only the Samsung does)
Video dynamic range -> worse
Video dynamic range at 1080p -> oh my... the iPhone destroys every other phone, and the Mate is worse than the Pixel and the Samsung
Front facing video -> probably the Samsung is the better
Portrait mode sharpness (not edge detection) -> worse than iPhone
Bokeh -> seems better than the Samsung's, but worse than iPhone's and Pixel's
For the end user I believe it takes extremely good photos, and the best photos during the night, but it's not the best in day light photography, which for me is still dominated by the Pixel 3 and the iPhone XS.
And that brings me to the issue: the Pixel, with just 1 camera, takes usually the best overall photos. With just 1 camera. I see the benefit of having multiple cameras serving multiple purposes. But the thing is that the Pixel and the iPhone are still overall best cameras around (for me, of course).