Pixel: https://cdn.dxomark.com/wp-content/uploads/2017/09/Pixels-IM...
iPhone 8: https://cdn.dxomark.com/wp-content/uploads/2017/09/ip8Plus-I...
That's not even close. Wider angle. Better range of contrast. Better sharpness of details. Hard to say which is truer to the colors without being there, but the colors look better on the Pixel.
---------- Edit: By their own ratings, the Pixel phone beats the iPhone on every metric scored:
Pixel v. iPhone 8+
90 - 89 :Exposure & Contrast
85 - 78 :Color
93 - 74 :Autofocus
93 - 64 :Texture
89 - 68 :Noise
84 - 73 :Artifacts
88 - 84 :Flash
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89 - 96 :Final Score
How does the iPhone receive an overall rating substantially higher than its highest individual rating?