I had p30 pro but never used mate 20 pro so I can't tell. Its definitely not as great, took photo of glass and sky and it recognised it as clouds. When I tried to take photo of my house and garden it just went berserk like screen had a water droplet and started switching flash modes. I had to restart the phone, worried me a bit since its only 5 days old and it's 7 days exchange here in THAILAND.